diff --git a/content/2014/08/26/apache-flink-0.6-available/index.html b/content/2014/08/26/apache-flink-0.6-available/index.html
index 905006f..81cd31e 100644
--- a/content/2014/08/26/apache-flink-0.6-available/index.html
+++ b/content/2014/08/26/apache-flink-0.6-available/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -645,7 +645,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2014/09/26/apache-flink-0.6.1-available/index.html b/content/2014/09/26/apache-flink-0.6.1-available/index.html
index 2b68612..e460c7a 100644
--- a/content/2014/09/26/apache-flink-0.6.1-available/index.html
+++ b/content/2014/09/26/apache-flink-0.6.1-available/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -570,7 +570,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2014/10/03/upcoming-events/index.html b/content/2014/10/03/upcoming-events/index.html
index 6db930a..b88f43c 100644
--- a/content/2014/10/03/upcoming-events/index.html
+++ b/content/2014/10/03/upcoming-events/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -671,7 +671,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2014/11/04/apache-flink-0.7.0-available/index.html b/content/2014/11/04/apache-flink-0.7.0-available/index.html
index 1ef8e35..6844212 100644
--- a/content/2014/11/04/apache-flink-0.7.0-available/index.html
+++ b/content/2014/11/04/apache-flink-0.7.0-available/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -633,7 +633,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2014/11/18/hadoop-compatibility-in-flink/index.html b/content/2014/11/18/hadoop-compatibility-in-flink/index.html
index 47aa77c..407a367 100644
--- a/content/2014/11/18/hadoop-compatibility-in-flink/index.html
+++ b/content/2014/11/18/hadoop-compatibility-in-flink/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -645,7 +645,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/01/06/december-2014-in-the-flink-community/index.html b/content/2015/01/06/december-2014-in-the-flink-community/index.html
index c6ca1a4..28a0787 100644
--- a/content/2015/01/06/december-2014-in-the-flink-community/index.html
+++ b/content/2015/01/06/december-2014-in-the-flink-community/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -658,7 +658,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/01/21/apache-flink-0.8.0-available/index.html b/content/2015/01/21/apache-flink-0.8.0-available/index.html
index 36a7ff4..86693b0 100644
--- a/content/2015/01/21/apache-flink-0.8.0-available/index.html
+++ b/content/2015/01/21/apache-flink-0.8.0-available/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -658,7 +658,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/02/04/january-2015-in-the-flink-community/index.html b/content/2015/02/04/january-2015-in-the-flink-community/index.html
index 1ee1ae7..73809c2 100644
--- a/content/2015/02/04/january-2015-in-the-flink-community/index.html
+++ b/content/2015/02/04/january-2015-in-the-flink-community/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -643,7 +643,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/02/09/introducing-flink-streaming/index.html b/content/2015/02/09/introducing-flink-streaming/index.html
index aef2aa3..a531c75 100644
--- a/content/2015/02/09/introducing-flink-streaming/index.html
+++ b/content/2015/02/09/introducing-flink-streaming/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1154,7 +1154,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/03/02/february-2015-in-the-flink-community/index.html b/content/2015/03/02/february-2015-in-the-flink-community/index.html
index b660277..3b15121 100644
--- a/content/2015/03/02/february-2015-in-the-flink-community/index.html
+++ b/content/2015/03/02/february-2015-in-the-flink-community/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -703,7 +703,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/03/13/peeking-into-apache-flinks-engine-room/index.html b/content/2015/03/13/peeking-into-apache-flinks-engine-room/index.html
index 6775b2f..3d8f37e 100644
--- a/content/2015/03/13/peeking-into-apache-flinks-engine-room/index.html
+++ b/content/2015/03/13/peeking-into-apache-flinks-engine-room/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -736,7 +736,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/04/07/march-2015-in-the-flink-community/index.html b/content/2015/04/07/march-2015-in-the-flink-community/index.html
index 4db4c95..80b1f85 100644
--- a/content/2015/04/07/march-2015-in-the-flink-community/index.html
+++ b/content/2015/04/07/march-2015-in-the-flink-community/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -652,7 +652,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/04/13/announcing-flink-0.9.0-milestone1-preview-release/index.html b/content/2015/04/13/announcing-flink-0.9.0-milestone1-preview-release/index.html
index 206e2d5..094446b 100644
--- a/content/2015/04/13/announcing-flink-0.9.0-milestone1-preview-release/index.html
+++ b/content/2015/04/13/announcing-flink-0.9.0-milestone1-preview-release/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -825,7 +825,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/05/11/juggling-with-bits-and-bytes/index.html b/content/2015/05/11/juggling-with-bits-and-bytes/index.html
index 3890be2..a0b0932 100644
--- a/content/2015/05/11/juggling-with-bits-and-bytes/index.html
+++ b/content/2015/05/11/juggling-with-bits-and-bytes/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -737,7 +737,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/05/14/april-2015-in-the-flink-community/index.html b/content/2015/05/14/april-2015-in-the-flink-community/index.html
index b5ae300..a8752fd 100644
--- a/content/2015/05/14/april-2015-in-the-flink-community/index.html
+++ b/content/2015/05/14/april-2015-in-the-flink-community/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -620,7 +620,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/06/24/announcing-apache-flink-0.9.0/index.html b/content/2015/06/24/announcing-apache-flink-0.9.0/index.html
index ccc5bde..20ce4d9 100644
--- a/content/2015/06/24/announcing-apache-flink-0.9.0/index.html
+++ b/content/2015/06/24/announcing-apache-flink-0.9.0/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -807,7 +807,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/08/24/introducing-gelly-graph-processing-with-apache-flink/index.html b/content/2015/08/24/introducing-gelly-graph-processing-with-apache-flink/index.html
index 0336423..5666fde 100644
--- a/content/2015/08/24/introducing-gelly-graph-processing-with-apache-flink/index.html
+++ b/content/2015/08/24/introducing-gelly-graph-processing-with-apache-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -990,7 +990,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/09/01/apache-flink-0.9.1-available/index.html b/content/2015/09/01/apache-flink-0.9.1-available/index.html
index 0532c8e..9929a2b 100644
--- a/content/2015/09/01/apache-flink-0.9.1-available/index.html
+++ b/content/2015/09/01/apache-flink-0.9.1-available/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -617,7 +617,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/09/03/announcing-flink-forward-2015/index.html b/content/2015/09/03/announcing-flink-forward-2015/index.html
index 9d1efcb..e8a4745 100644
--- a/content/2015/09/03/announcing-flink-forward-2015/index.html
+++ b/content/2015/09/03/announcing-flink-forward-2015/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -602,7 +602,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/09/16/off-heap-memory-in-apache-flink-and-the-curious-jit-compiler/index.html b/content/2015/09/16/off-heap-memory-in-apache-flink-and-the-curious-jit-compiler/index.html
index 8cb9703..6239eec 100644
--- a/content/2015/09/16/off-heap-memory-in-apache-flink-and-the-curious-jit-compiler/index.html
+++ b/content/2015/09/16/off-heap-memory-in-apache-flink-and-the-curious-jit-compiler/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1403,7 +1403,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/11/16/announcing-apache-flink-0.10.0/index.html b/content/2015/11/16/announcing-apache-flink-0.10.0/index.html
index b236c4e..6ba05a1 100644
--- a/content/2015/11/16/announcing-apache-flink-0.10.0/index.html
+++ b/content/2015/11/16/announcing-apache-flink-0.10.0/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -762,7 +762,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/11/27/flink-0.10.1-released/index.html b/content/2015/11/27/flink-0.10.1-released/index.html
index 8652c92..84b613f 100644
--- a/content/2015/11/27/flink-0.10.1-released/index.html
+++ b/content/2015/11/27/flink-0.10.1-released/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -624,7 +624,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/12/04/introducing-stream-windows-in-apache-flink/index.html b/content/2015/12/04/introducing-stream-windows-in-apache-flink/index.html
index bdd8565..637a439 100644
--- a/content/2015/12/04/introducing-stream-windows-in-apache-flink/index.html
+++ b/content/2015/12/04/introducing-stream-windows-in-apache-flink/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -693,7 +693,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/12/11/storm-compatibility-in-apache-flink-how-to-run-existing-storm-topologies-on-flink/index.html b/content/2015/12/11/storm-compatibility-in-apache-flink-how-to-run-existing-storm-topologies-on-flink/index.html
index f905f27..ff328e6 100644
--- a/content/2015/12/11/storm-compatibility-in-apache-flink-how-to-run-existing-storm-topologies-on-flink/index.html
+++ b/content/2015/12/11/storm-compatibility-in-apache-flink-how-to-run-existing-storm-topologies-on-flink/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -697,7 +697,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2015/12/18/flink-2015-a-year-in-review-and-a-lookout-to-2016/index.html b/content/2015/12/18/flink-2015-a-year-in-review-and-a-lookout-to-2016/index.html
index 3734853..065d2d9 100644
--- a/content/2015/12/18/flink-2015-a-year-in-review-and-a-lookout-to-2016/index.html
+++ b/content/2015/12/18/flink-2015-a-year-in-review-and-a-lookout-to-2016/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -762,7 +762,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/02/11/flink-0.10.2-released/index.html b/content/2016/02/11/flink-0.10.2-released/index.html
index 1f813a2..4698c0f 100644
--- a/content/2016/02/11/flink-0.10.2-released/index.html
+++ b/content/2016/02/11/flink-0.10.2-released/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -603,7 +603,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/03/08/announcing-apache-flink-1.0.0/index.html b/content/2016/03/08/announcing-apache-flink-1.0.0/index.html
index 80176e8..e636b6e 100644
--- a/content/2016/03/08/announcing-apache-flink-1.0.0/index.html
+++ b/content/2016/03/08/announcing-apache-flink-1.0.0/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -701,7 +701,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/04/06/flink-1.0.1-released/index.html b/content/2016/04/06/flink-1.0.1-released/index.html
index 65abe63..135e5ac 100644
--- a/content/2016/04/06/flink-1.0.1-released/index.html
+++ b/content/2016/04/06/flink-1.0.1-released/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -635,7 +635,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/04/06/introducing-complex-event-processing-cep-with-apache-flink/index.html b/content/2016/04/06/introducing-complex-event-processing-cep-with-apache-flink/index.html
index 4fd136c..a5867f5 100644
--- a/content/2016/04/06/introducing-complex-event-processing-cep-with-apache-flink/index.html
+++ b/content/2016/04/06/introducing-complex-event-processing-cep-with-apache-flink/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -730,7 +730,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/04/14/flink-forward-2016-call-for-submissions-is-now-open/index.html b/content/2016/04/14/flink-forward-2016-call-for-submissions-is-now-open/index.html
index e7d196b..fa847bd 100644
--- a/content/2016/04/14/flink-forward-2016-call-for-submissions-is-now-open/index.html
+++ b/content/2016/04/14/flink-forward-2016-call-for-submissions-is-now-open/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -567,7 +567,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/04/22/flink-1.0.2-released/index.html b/content/2016/04/22/flink-1.0.2-released/index.html
index c5e506b..fa605b6 100644
--- a/content/2016/04/22/flink-1.0.2-released/index.html
+++ b/content/2016/04/22/flink-1.0.2-released/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -625,7 +625,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/05/11/flink-1.0.3-released/index.html b/content/2016/05/11/flink-1.0.3-released/index.html
index 00209e0..b99bad5 100644
--- a/content/2016/05/11/flink-1.0.3-released/index.html
+++ b/content/2016/05/11/flink-1.0.3-released/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -622,7 +622,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/05/24/stream-processing-for-everyone-with-sql-and-apache-flink/index.html b/content/2016/05/24/stream-processing-for-everyone-with-sql-and-apache-flink/index.html
index 11d1f87..7718fe9 100644
--- a/content/2016/05/24/stream-processing-for-everyone-with-sql-and-apache-flink/index.html
+++ b/content/2016/05/24/stream-processing-for-everyone-with-sql-and-apache-flink/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -687,7 +687,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/08/04/announcing-apache-flink-1.1.0/index.html b/content/2016/08/04/announcing-apache-flink-1.1.0/index.html
index c8f897e..c9697eb 100644
--- a/content/2016/08/04/announcing-apache-flink-1.1.0/index.html
+++ b/content/2016/08/04/announcing-apache-flink-1.1.0/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -790,7 +790,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/08/04/flink-1.1.1-released/index.html b/content/2016/08/04/flink-1.1.1-released/index.html
index 99d5bc3..bb26bb7 100644
--- a/content/2016/08/04/flink-1.1.1-released/index.html
+++ b/content/2016/08/04/flink-1.1.1-released/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -585,7 +585,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/08/24/flink-forward-2016-announcing-schedule-keynotes-and-panel-discussion/index.html b/content/2016/08/24/flink-forward-2016-announcing-schedule-keynotes-and-panel-discussion/index.html
index cc4b786..46ee5ef 100644
--- a/content/2016/08/24/flink-forward-2016-announcing-schedule-keynotes-and-panel-discussion/index.html
+++ b/content/2016/08/24/flink-forward-2016-announcing-schedule-keynotes-and-panel-discussion/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -570,7 +570,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/09/05/apache-flink-1.1.2-released/index.html b/content/2016/09/05/apache-flink-1.1.2-released/index.html
index 32385d7..8e9fe43 100644
--- a/content/2016/09/05/apache-flink-1.1.2-released/index.html
+++ b/content/2016/09/05/apache-flink-1.1.2-released/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -627,7 +627,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/10/12/apache-flink-1.1.3-released/index.html b/content/2016/10/12/apache-flink-1.1.3-released/index.html
index 78e579f..f499380 100644
--- a/content/2016/10/12/apache-flink-1.1.3-released/index.html
+++ b/content/2016/10/12/apache-flink-1.1.3-released/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -670,7 +670,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/12/19/apache-flink-in-2016-year-in-review/index.html b/content/2016/12/19/apache-flink-in-2016-year-in-review/index.html
index a7b3a00..f3fc45b 100644
--- a/content/2016/12/19/apache-flink-in-2016-year-in-review/index.html
+++ b/content/2016/12/19/apache-flink-in-2016-year-in-review/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -734,7 +734,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2016/12/21/apache-flink-1.1.4-released/index.html b/content/2016/12/21/apache-flink-1.1.4-released/index.html
index faf51d7..944144d 100644
--- a/content/2016/12/21/apache-flink-1.1.4-released/index.html
+++ b/content/2016/12/21/apache-flink-1.1.4-released/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -800,7 +800,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/02/06/announcing-apache-flink-1.2.0/index.html b/content/2017/02/06/announcing-apache-flink-1.2.0/index.html
index 58a455a..ca7650c 100644
--- a/content/2017/02/06/announcing-apache-flink-1.2.0/index.html
+++ b/content/2017/02/06/announcing-apache-flink-1.2.0/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -821,7 +821,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/03/23/apache-flink-1.1.5-released/index.html b/content/2017/03/23/apache-flink-1.1.5-released/index.html
index 127ef1b..3e5b3fb 100644
--- a/content/2017/03/23/apache-flink-1.1.5-released/index.html
+++ b/content/2017/03/23/apache-flink-1.1.5-released/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -647,7 +647,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/03/29/from-streams-to-tables-and-back-again-an-update-on-flinks-table-sql-api/index.html b/content/2017/03/29/from-streams-to-tables-and-back-again-an-update-on-flinks-table-sql-api/index.html
index 7463db9..28c7e59 100644
--- a/content/2017/03/29/from-streams-to-tables-and-back-again-an-update-on-flinks-table-sql-api/index.html
+++ b/content/2017/03/29/from-streams-to-tables-and-back-again-an-update-on-flinks-table-sql-api/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -716,7 +716,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/03/30/continuous-queries-on-dynamic-tables/index.html b/content/2017/03/30/continuous-queries-on-dynamic-tables/index.html
index 1cc4464..e2f3849 100644
--- a/content/2017/03/30/continuous-queries-on-dynamic-tables/index.html
+++ b/content/2017/03/30/continuous-queries-on-dynamic-tables/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -725,7 +725,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/04/26/apache-flink-1.2.1-released/index.html b/content/2017/04/26/apache-flink-1.2.1-released/index.html
index 3da8de0..7375672 100644
--- a/content/2017/04/26/apache-flink-1.2.1-released/index.html
+++ b/content/2017/04/26/apache-flink-1.2.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -765,7 +765,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/05/16/introducing-docker-images-for-apache-flink/index.html b/content/2017/05/16/introducing-docker-images-for-apache-flink/index.html
index 2c87528..ef27c0e 100644
--- a/content/2017/05/16/introducing-docker-images-for-apache-flink/index.html
+++ b/content/2017/05/16/introducing-docker-images-for-apache-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -576,7 +576,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/06/01/apache-flink-1.3.0-release-announcement/index.html b/content/2017/06/01/apache-flink-1.3.0-release-announcement/index.html
index 7193617..265c7dd 100644
--- a/content/2017/06/01/apache-flink-1.3.0-release-announcement/index.html
+++ b/content/2017/06/01/apache-flink-1.3.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -745,7 +745,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/06/23/apache-flink-1.3.1-released/index.html b/content/2017/06/23/apache-flink-1.3.1-released/index.html
index 88f475a..ec0d178 100644
--- a/content/2017/06/23/apache-flink-1.3.1-released/index.html
+++ b/content/2017/06/23/apache-flink-1.3.1-released/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -699,7 +699,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/07/04/a-deep-dive-into-rescalable-state-in-apache-flink/index.html b/content/2017/07/04/a-deep-dive-into-rescalable-state-in-apache-flink/index.html
index 1dcf0c5..7d830b9 100644
--- a/content/2017/07/04/a-deep-dive-into-rescalable-state-in-apache-flink/index.html
+++ b/content/2017/07/04/a-deep-dive-into-rescalable-state-in-apache-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -698,7 +698,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/08/05/apache-flink-1.3.2-released/index.html b/content/2017/08/05/apache-flink-1.3.2-released/index.html
index 8e044a6..03c9475 100644
--- a/content/2017/08/05/apache-flink-1.3.2-released/index.html
+++ b/content/2017/08/05/apache-flink-1.3.2-released/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -757,7 +757,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/11/21/looking-ahead-to-apache-flink-1.4.0-and-1.5.0/index.html b/content/2017/11/21/looking-ahead-to-apache-flink-1.4.0-and-1.5.0/index.html
index b66ca96..10fdd71 100644
--- a/content/2017/11/21/looking-ahead-to-apache-flink-1.4.0-and-1.5.0/index.html
+++ b/content/2017/11/21/looking-ahead-to-apache-flink-1.4.0-and-1.5.0/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -704,7 +704,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/12/12/apache-flink-1.4.0-release-announcement/index.html b/content/2017/12/12/apache-flink-1.4.0-release-announcement/index.html
index 755ee94..b91f822 100644
--- a/content/2017/12/12/apache-flink-1.4.0-release-announcement/index.html
+++ b/content/2017/12/12/apache-flink-1.4.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -804,7 +804,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2017/12/21/apache-flink-in-2017-year-in-review/index.html b/content/2017/12/21/apache-flink-in-2017-year-in-review/index.html
index 7f66cf0..ee2cde6 100644
--- a/content/2017/12/21/apache-flink-in-2017-year-in-review/index.html
+++ b/content/2017/12/21/apache-flink-in-2017-year-in-review/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -685,7 +685,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/01/30/managing-large-state-in-apache-flink-an-intro-to-incremental-checkpointing/index.html b/content/2018/01/30/managing-large-state-in-apache-flink-an-intro-to-incremental-checkpointing/index.html
index 8dfd77a..74e348c 100644
--- a/content/2018/01/30/managing-large-state-in-apache-flink-an-intro-to-incremental-checkpointing/index.html
+++ b/content/2018/01/30/managing-large-state-in-apache-flink-an-intro-to-incremental-checkpointing/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -655,7 +655,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/02/15/apache-flink-1.4.1-released/index.html b/content/2018/02/15/apache-flink-1.4.1-released/index.html
index 78f161d..d7064d9 100644
--- a/content/2018/02/15/apache-flink-1.4.1-released/index.html
+++ b/content/2018/02/15/apache-flink-1.4.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -727,7 +727,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/02/28/an-overview-of-end-to-end-exactly-once-processing-in-apache-flink-with-apache-kafka-too/index.html b/content/2018/02/28/an-overview-of-end-to-end-exactly-once-processing-in-apache-flink-with-apache-kafka-too/index.html
index 2d9cd0d..bbd6f8f 100644
--- a/content/2018/02/28/an-overview-of-end-to-end-exactly-once-processing-in-apache-flink-with-apache-kafka-too/index.html
+++ b/content/2018/02/28/an-overview-of-end-to-end-exactly-once-processing-in-apache-flink-with-apache-kafka-too/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -689,7 +689,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/03/08/apache-flink-1.4.2-released/index.html b/content/2018/03/08/apache-flink-1.4.2-released/index.html
index 026ba72..9df3ed7 100644
--- a/content/2018/03/08/apache-flink-1.4.2-released/index.html
+++ b/content/2018/03/08/apache-flink-1.4.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -643,7 +643,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/03/15/apache-flink-1.3.3-released/index.html b/content/2018/03/15/apache-flink-1.3.3-released/index.html
index f6eddfc..2de98af 100644
--- a/content/2018/03/15/apache-flink-1.3.3-released/index.html
+++ b/content/2018/03/15/apache-flink-1.3.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -613,7 +613,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/05/18/apache-flink-1.5.0-release-announcement/index.html b/content/2018/05/18/apache-flink-1.5.0-release-announcement/index.html
index 1c39097..d8d8bce 100644
--- a/content/2018/05/18/apache-flink-1.5.0-release-announcement/index.html
+++ b/content/2018/05/18/apache-flink-1.5.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -695,7 +695,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/07/12/apache-flink-1.5.1-released/index.html b/content/2018/07/12/apache-flink-1.5.1-released/index.html
index bbcc43e..ae741c4 100644
--- a/content/2018/07/12/apache-flink-1.5.1-released/index.html
+++ b/content/2018/07/12/apache-flink-1.5.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -759,7 +759,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/07/31/apache-flink-1.5.2-released/index.html b/content/2018/07/31/apache-flink-1.5.2-released/index.html
index 138b229..142c210 100644
--- a/content/2018/07/31/apache-flink-1.5.2-released/index.html
+++ b/content/2018/07/31/apache-flink-1.5.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -693,7 +693,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/08/09/apache-flink-1.6.0-release-announcement/index.html b/content/2018/08/09/apache-flink-1.6.0-release-announcement/index.html
index b3b984d..e42aa2c 100644
--- a/content/2018/08/09/apache-flink-1.6.0-release-announcement/index.html
+++ b/content/2018/08/09/apache-flink-1.6.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -782,7 +782,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/08/21/apache-flink-1.5.3-released/index.html b/content/2018/08/21/apache-flink-1.5.3-released/index.html
index bef05cc..64ce7bc 100644
--- a/content/2018/08/21/apache-flink-1.5.3-released/index.html
+++ b/content/2018/08/21/apache-flink-1.5.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -665,7 +665,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/09/20/apache-flink-1.5.4-released/index.html b/content/2018/09/20/apache-flink-1.5.4-released/index.html
index 54f32ce..d0ce86a 100644
--- a/content/2018/09/20/apache-flink-1.5.4-released/index.html
+++ b/content/2018/09/20/apache-flink-1.5.4-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -646,7 +646,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/09/20/apache-flink-1.6.1-released/index.html b/content/2018/09/20/apache-flink-1.6.1-released/index.html
index 2c25a4d..d24a849 100644
--- a/content/2018/09/20/apache-flink-1.6.1-released/index.html
+++ b/content/2018/09/20/apache-flink-1.6.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -730,7 +730,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/10/29/apache-flink-1.5.5-released/index.html b/content/2018/10/29/apache-flink-1.5.5-released/index.html
index 47cf58f..01e4eba 100644
--- a/content/2018/10/29/apache-flink-1.5.5-released/index.html
+++ b/content/2018/10/29/apache-flink-1.5.5-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -661,7 +661,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/10/29/apache-flink-1.6.2-released/index.html b/content/2018/10/29/apache-flink-1.6.2-released/index.html
index dc2eeb3..4f0e059 100644
--- a/content/2018/10/29/apache-flink-1.6.2-released/index.html
+++ b/content/2018/10/29/apache-flink-1.6.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -687,7 +687,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/11/30/apache-flink-1.7.0-release-announcement/index.html b/content/2018/11/30/apache-flink-1.7.0-release-announcement/index.html
index 9a9987c..88cdefc 100644
--- a/content/2018/11/30/apache-flink-1.7.0-release-announcement/index.html
+++ b/content/2018/11/30/apache-flink-1.7.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -676,7 +676,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/12/21/apache-flink-1.7.1-released/index.html b/content/2018/12/21/apache-flink-1.7.1-released/index.html
index f4e038c..2416062 100644
--- a/content/2018/12/21/apache-flink-1.7.1-released/index.html
+++ b/content/2018/12/21/apache-flink-1.7.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -657,7 +657,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/12/22/apache-flink-1.6.3-released/index.html b/content/2018/12/22/apache-flink-1.6.3-released/index.html
index 3daa3e4..1de5c02 100644
--- a/content/2018/12/22/apache-flink-1.6.3-released/index.html
+++ b/content/2018/12/22/apache-flink-1.6.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -774,7 +774,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2018/12/26/apache-flink-1.5.6-released/index.html b/content/2018/12/26/apache-flink-1.5.6-released/index.html
index da18735..a4c7458 100644
--- a/content/2018/12/26/apache-flink-1.5.6-released/index.html
+++ b/content/2018/12/26/apache-flink-1.5.6-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -701,7 +701,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/02/13/batch-as-a-special-case-of-streaming-and-alibabas-contribution-of-blink/index.html b/content/2019/02/13/batch-as-a-special-case-of-streaming-and-alibabas-contribution-of-blink/index.html
index f63e410..3dd6c27 100644
--- a/content/2019/02/13/batch-as-a-special-case-of-streaming-and-alibabas-contribution-of-blink/index.html
+++ b/content/2019/02/13/batch-as-a-special-case-of-streaming-and-alibabas-contribution-of-blink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -723,7 +723,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/02/15/apache-flink-1.7.2-released/index.html b/content/2019/02/15/apache-flink-1.7.2-released/index.html
index 9470adb..e54260d 100644
--- a/content/2019/02/15/apache-flink-1.7.2-released/index.html
+++ b/content/2019/02/15/apache-flink-1.7.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -703,7 +703,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/02/21/monitoring-apache-flink-applications-101/index.html b/content/2019/02/21/monitoring-apache-flink-applications-101/index.html
index 7e8a333..130f8d3 100644
--- a/content/2019/02/21/monitoring-apache-flink-applications-101/index.html
+++ b/content/2019/02/21/monitoring-apache-flink-applications-101/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1129,7 +1129,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/02/25/apache-flink-1.6.4-released/index.html b/content/2019/02/25/apache-flink-1.6.4-released/index.html
index 45a3433..7c8910b 100644
--- a/content/2019/02/25/apache-flink-1.6.4-released/index.html
+++ b/content/2019/02/25/apache-flink-1.6.4-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -651,7 +651,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/03/06/what-to-expect-from-flink-forward-san-francisco-2019/index.html b/content/2019/03/06/what-to-expect-from-flink-forward-san-francisco-2019/index.html
index 7f41419..8003562 100644
--- a/content/2019/03/06/what-to-expect-from-flink-forward-san-francisco-2019/index.html
+++ b/content/2019/03/06/what-to-expect-from-flink-forward-san-francisco-2019/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -602,7 +602,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/03/11/flink-and-prometheus-cloud-native-monitoring-of-streaming-applications/index.html b/content/2019/03/11/flink-and-prometheus-cloud-native-monitoring-of-streaming-applications/index.html
index b1108c0..6171e7d 100644
--- a/content/2019/03/11/flink-and-prometheus-cloud-native-monitoring-of-streaming-applications/index.html
+++ b/content/2019/03/11/flink-and-prometheus-cloud-native-monitoring-of-streaming-applications/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -683,7 +683,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/04/09/apache-flink-1.8.0-release-announcement/index.html b/content/2019/04/09/apache-flink-1.8.0-release-announcement/index.html
index 38749a4..0679eff 100644
--- a/content/2019/04/09/apache-flink-1.8.0-release-announcement/index.html
+++ b/content/2019/04/09/apache-flink-1.8.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -831,7 +831,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/04/17/apache-flinks-application-to-season-of-docs/index.html b/content/2019/04/17/apache-flinks-application-to-season-of-docs/index.html
index 1cfdd8b..c69f896 100644
--- a/content/2019/04/17/apache-flinks-application-to-season-of-docs/index.html
+++ b/content/2019/04/17/apache-flinks-application-to-season-of-docs/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -628,7 +628,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/05/03/when-flink-pulsar-come-together/index.html b/content/2019/05/03/when-flink-pulsar-come-together/index.html
index 487a23b..02fcba3 100644
--- a/content/2019/05/03/when-flink-pulsar-come-together/index.html
+++ b/content/2019/05/03/when-flink-pulsar-come-together/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -710,7 +710,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/05/14/flux-capacitor-huh-temporal-tables-and-joins-in-streaming-sql/index.html b/content/2019/05/14/flux-capacitor-huh-temporal-tables-and-joins-in-streaming-sql/index.html
index aeba349..41dfdb1 100644
--- a/content/2019/05/14/flux-capacitor-huh-temporal-tables-and-joins-in-streaming-sql/index.html
+++ b/content/2019/05/14/flux-capacitor-huh-temporal-tables-and-joins-in-streaming-sql/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -666,7 +666,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/05/17/state-ttl-in-flink-1.8.0-how-to-automatically-cleanup-application-state-in-apache-flink/index.html b/content/2019/05/17/state-ttl-in-flink-1.8.0-how-to-automatically-cleanup-application-state-in-apache-flink/index.html
index 00c0f37..3e34f26 100644
--- a/content/2019/05/17/state-ttl-in-flink-1.8.0-how-to-automatically-cleanup-application-state-in-apache-flink/index.html
+++ b/content/2019/05/17/state-ttl-in-flink-1.8.0-how-to-automatically-cleanup-application-state-in-apache-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -702,7 +702,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/06/05/a-deep-dive-into-flinks-network-stack/index.html b/content/2019/06/05/a-deep-dive-into-flinks-network-stack/index.html
index ce0d822..53c5cda 100644
--- a/content/2019/06/05/a-deep-dive-into-flinks-network-stack/index.html
+++ b/content/2019/06/05/a-deep-dive-into-flinks-network-stack/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -890,7 +890,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/06/26/a-practical-guide-to-broadcast-state-in-apache-flink/index.html b/content/2019/06/26/a-practical-guide-to-broadcast-state-in-apache-flink/index.html
index ccab4a4..09d71e5 100644
--- a/content/2019/06/26/a-practical-guide-to-broadcast-state-in-apache-flink/index.html
+++ b/content/2019/06/26/a-practical-guide-to-broadcast-state-in-apache-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -743,7 +743,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/07/02/apache-flink-1.8.1-released/index.html b/content/2019/07/02/apache-flink-1.8.1-released/index.html
index cd68ef3..19dfd6a 100644
--- a/content/2019/07/02/apache-flink-1.8.1-released/index.html
+++ b/content/2019/07/02/apache-flink-1.8.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -702,7 +702,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/07/23/flink-network-stack-vol.-2-monitoring-metrics-and-that-backpressure-thing/index.html b/content/2019/07/23/flink-network-stack-vol.-2-monitoring-metrics-and-that-backpressure-thing/index.html
index 22834e2..49cfdb4 100644
--- a/content/2019/07/23/flink-network-stack-vol.-2-monitoring-metrics-and-that-backpressure-thing/index.html
+++ b/content/2019/07/23/flink-network-stack-vol.-2-monitoring-metrics-and-that-backpressure-thing/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -893,7 +893,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/08/22/apache-flink-1.9.0-release-announcement/index.html b/content/2019/08/22/apache-flink-1.9.0-release-announcement/index.html
index 23e5571..dc8bafc 100644
--- a/content/2019/08/22/apache-flink-1.9.0-release-announcement/index.html
+++ b/content/2019/08/22/apache-flink-1.9.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -914,7 +914,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/09/05/flink-community-update-september19/index.html b/content/2019/09/05/flink-community-update-september19/index.html
index 88d3e80..58c7c73 100644
--- a/content/2019/09/05/flink-community-update-september19/index.html
+++ b/content/2019/09/05/flink-community-update-september19/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -740,7 +740,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/09/11/apache-flink-1.8.2-released/index.html b/content/2019/09/11/apache-flink-1.8.2-released/index.html
index 73943f6..5f8602d 100644
--- a/content/2019/09/11/apache-flink-1.8.2-released/index.html
+++ b/content/2019/09/11/apache-flink-1.8.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -650,7 +650,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/09/13/the-state-processor-api-how-to-read-write-and-modify-the-state-of-flink-applications/index.html b/content/2019/09/13/the-state-processor-api-how-to-read-write-and-modify-the-state-of-flink-applications/index.html
index 79188f3..15a9830 100644
--- a/content/2019/09/13/the-state-processor-api-how-to-read-write-and-modify-the-state-of-flink-applications/index.html
+++ b/content/2019/09/13/the-state-processor-api-how-to-read-write-and-modify-the-state-of-flink-applications/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -627,7 +627,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/10/18/apache-flink-1.9.1-released/index.html b/content/2019/10/18/apache-flink-1.9.1-released/index.html
index b61305d..591dd8e 100644
--- a/content/2019/10/18/apache-flink-1.9.1-released/index.html
+++ b/content/2019/10/18/apache-flink-1.9.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -782,7 +782,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/11/06/running-apache-flink-on-kubernetes-with-kudo/index.html b/content/2019/11/06/running-apache-flink-on-kubernetes-with-kudo/index.html
index e6812b8..51da048 100644
--- a/content/2019/11/06/running-apache-flink-on-kubernetes-with-kudo/index.html
+++ b/content/2019/11/06/running-apache-flink-on-kubernetes-with-kudo/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -666,7 +666,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/11/25/how-to-query-pulsar-streams-using-apache-flink/index.html b/content/2019/11/25/how-to-query-pulsar-streams-using-apache-flink/index.html
index fdeaad0..833378e 100644
--- a/content/2019/11/25/how-to-query-pulsar-streams-using-apache-flink/index.html
+++ b/content/2019/11/25/how-to-query-pulsar-streams-using-apache-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -752,7 +752,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2019/12/11/apache-flink-1.8.3-released/index.html b/content/2019/12/11/apache-flink-1.8.3-released/index.html
index bea3389..e9f8ed5 100644
--- a/content/2019/12/11/apache-flink-1.8.3-released/index.html
+++ b/content/2019/12/11/apache-flink-1.8.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -696,7 +696,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/01/15/advanced-flink-application-patterns-vol.1-case-study-of-a-fraud-detection-system/index.html b/content/2020/01/15/advanced-flink-application-patterns-vol.1-case-study-of-a-fraud-detection-system/index.html
index fcffd03..8f77827 100644
--- a/content/2020/01/15/advanced-flink-application-patterns-vol.1-case-study-of-a-fraud-detection-system/index.html
+++ b/content/2020/01/15/advanced-flink-application-patterns-vol.1-case-study-of-a-fraud-detection-system/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -745,7 +745,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/01/29/state-unlocked-interacting-with-state-in-apache-flink/index.html b/content/2020/01/29/state-unlocked-interacting-with-state-in-apache-flink/index.html
index 9f85757..20ce18f 100644
--- a/content/2020/01/29/state-unlocked-interacting-with-state-in-apache-flink/index.html
+++ b/content/2020/01/29/state-unlocked-interacting-with-state-in-apache-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -785,7 +785,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/01/30/apache-flink-1.9.2-released/index.html b/content/2020/01/30/apache-flink-1.9.2-released/index.html
index de294fa..565effe 100644
--- a/content/2020/01/30/apache-flink-1.9.2-released/index.html
+++ b/content/2020/01/30/apache-flink-1.9.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -842,7 +842,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/02/03/a-guide-for-unit-testing-in-apache-flink/index.html b/content/2020/02/03/a-guide-for-unit-testing-in-apache-flink/index.html
index 3c103a6..cac49ec 100644
--- a/content/2020/02/03/a-guide-for-unit-testing-in-apache-flink/index.html
+++ b/content/2020/02/03/a-guide-for-unit-testing-in-apache-flink/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -776,7 +776,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/02/11/apache-flink-1.10.0-release-announcement/index.html b/content/2020/02/11/apache-flink-1.10.0-release-announcement/index.html
index b974a99..31346f3 100644
--- a/content/2020/02/11/apache-flink-1.10.0-release-announcement/index.html
+++ b/content/2020/02/11/apache-flink-1.10.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -768,7 +768,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/02/20/no-java-required-configuring-sources-and-sinks-in-sql/index.html b/content/2020/02/20/no-java-required-configuring-sources-and-sinks-in-sql/index.html
index 92e7045..277ca53 100644
--- a/content/2020/02/20/no-java-required-configuring-sources-and-sinks-in-sql/index.html
+++ b/content/2020/02/20/no-java-required-configuring-sources-and-sinks-in-sql/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -688,7 +688,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/02/22/apache-beam-how-beam-runs-on-top-of-flink/index.html b/content/2020/02/22/apache-beam-how-beam-runs-on-top-of-flink/index.html
index c75b5f5..1fe0904 100644
--- a/content/2020/02/22/apache-beam-how-beam-runs-on-top-of-flink/index.html
+++ b/content/2020/02/22/apache-beam-how-beam-runs-on-top-of-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -736,7 +736,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/03/24/advanced-flink-application-patterns-vol.2-dynamic-updates-of-application-logic/index.html b/content/2020/03/24/advanced-flink-application-patterns-vol.2-dynamic-updates-of-application-logic/index.html
index 11cd04e..55ca262 100644
--- a/content/2020/03/24/advanced-flink-application-patterns-vol.2-dynamic-updates-of-application-logic/index.html
+++ b/content/2020/03/24/advanced-flink-application-patterns-vol.2-dynamic-updates-of-application-logic/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -740,7 +740,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/03/27/flink-as-unified-engine-for-modern-data-warehousing-production-ready-hive-integration/index.html b/content/2020/03/27/flink-as-unified-engine-for-modern-data-warehousing-production-ready-hive-integration/index.html
index 0a2991f..3c5a1f0 100644
--- a/content/2020/03/27/flink-as-unified-engine-for-modern-data-warehousing-production-ready-hive-integration/index.html
+++ b/content/2020/03/27/flink-as-unified-engine-for-modern-data-warehousing-production-ready-hive-integration/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -682,7 +682,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/03/30/flink-community-update-april20/index.html b/content/2020/03/30/flink-community-update-april20/index.html
index 6953a43..df7a441 100644
--- a/content/2020/03/30/flink-community-update-april20/index.html
+++ b/content/2020/03/30/flink-community-update-april20/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -721,7 +721,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/04/07/stateful-functions-2.0-an-event-driven-database-on-apache-flink/index.html b/content/2020/04/07/stateful-functions-2.0-an-event-driven-database-on-apache-flink/index.html
index e127656..b4575d5 100644
--- a/content/2020/04/07/stateful-functions-2.0-an-event-driven-database-on-apache-flink/index.html
+++ b/content/2020/04/07/stateful-functions-2.0-an-event-driven-database-on-apache-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -784,7 +784,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/04/09/pyflink-introducing-python-support-for-udfs-in-flinks-table-api/index.html b/content/2020/04/09/pyflink-introducing-python-support-for-udfs-in-flinks-table-api/index.html
index 3e347a9..1ea6154 100644
--- a/content/2020/04/09/pyflink-introducing-python-support-for-udfs-in-flinks-table-api/index.html
+++ b/content/2020/04/09/pyflink-introducing-python-support-for-udfs-in-flinks-table-api/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -735,7 +735,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/04/15/flink-serialization-tuning-vol.-1-choosing-your-serializer-if-you-can/index.html b/content/2020/04/15/flink-serialization-tuning-vol.-1-choosing-your-serializer-if-you-can/index.html
index 92ca43a..30f52ca 100644
--- a/content/2020/04/15/flink-serialization-tuning-vol.-1-choosing-your-serializer-if-you-can/index.html
+++ b/content/2020/04/15/flink-serialization-tuning-vol.-1-choosing-your-serializer-if-you-can/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -833,7 +833,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/04/21/memory-management-improvements-with-apache-flink-1.10/index.html b/content/2020/04/21/memory-management-improvements-with-apache-flink-1.10/index.html
index 2bb7802..464bc7b 100644
--- a/content/2020/04/21/memory-management-improvements-with-apache-flink-1.10/index.html
+++ b/content/2020/04/21/memory-management-improvements-with-apache-flink-1.10/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -660,7 +660,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/04/24/apache-flink-1.9.3-released/index.html b/content/2020/04/24/apache-flink-1.9.3-released/index.html
index dc31231..2fe6841 100644
--- a/content/2020/04/24/apache-flink-1.9.3-released/index.html
+++ b/content/2020/04/24/apache-flink-1.9.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -688,7 +688,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/05/04/applying-to-google-season-of-docs-2020/index.html b/content/2020/05/04/applying-to-google-season-of-docs-2020/index.html
index 6230917..4adc338 100644
--- a/content/2020/05/04/applying-to-google-season-of-docs-2020/index.html
+++ b/content/2020/05/04/applying-to-google-season-of-docs-2020/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -648,7 +648,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/05/06/flink-community-update-may20/index.html b/content/2020/05/06/flink-community-update-may20/index.html
index 9fbcb03..958e6e5 100644
--- a/content/2020/05/06/flink-community-update-may20/index.html
+++ b/content/2020/05/06/flink-community-update-may20/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -785,7 +785,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/05/12/apache-flink-1.10.1-released/index.html b/content/2020/05/12/apache-flink-1.10.1-released/index.html
index 1a6aa36..56c9b62 100644
--- a/content/2020/05/12/apache-flink-1.10.1-released/index.html
+++ b/content/2020/05/12/apache-flink-1.10.1-released/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -938,7 +938,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/06/09/stateful-functions-2.1.0-release-announcement/index.html b/content/2020/06/09/stateful-functions-2.1.0-release-announcement/index.html
index 1f02962..71b9b72 100644
--- a/content/2020/06/09/stateful-functions-2.1.0-release-announcement/index.html
+++ b/content/2020/06/09/stateful-functions-2.1.0-release-announcement/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -650,7 +650,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/06/10/flink-community-update-june20/index.html b/content/2020/06/10/flink-community-update-june20/index.html
index 8bc75bb..2555932 100644
--- a/content/2020/06/10/flink-community-update-june20/index.html
+++ b/content/2020/06/10/flink-community-update-june20/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -690,7 +690,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/06/15/flink-on-zeppelin-notebooks-for-interactive-data-analysis-part-1/index.html b/content/2020/06/15/flink-on-zeppelin-notebooks-for-interactive-data-analysis-part-1/index.html
index 0c15924..d385750 100644
--- a/content/2020/06/15/flink-on-zeppelin-notebooks-for-interactive-data-analysis-part-1/index.html
+++ b/content/2020/06/15/flink-on-zeppelin-notebooks-for-interactive-data-analysis-part-1/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -653,7 +653,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/06/23/flink-on-zeppelin-notebooks-for-interactive-data-analysis-part-2/index.html b/content/2020/06/23/flink-on-zeppelin-notebooks-for-interactive-data-analysis-part-2/index.html
index 5583344..e0dfad4 100644
--- a/content/2020/06/23/flink-on-zeppelin-notebooks-for-interactive-data-analysis-part-2/index.html
+++ b/content/2020/06/23/flink-on-zeppelin-notebooks-for-interactive-data-analysis-part-2/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -686,7 +686,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/07/06/apache-flink-1.11.0-release-announcement/index.html b/content/2020/07/06/apache-flink-1.11.0-release-announcement/index.html
index 89ca8cb..6f1ef63 100644
--- a/content/2020/07/06/apache-flink-1.11.0-release-announcement/index.html
+++ b/content/2020/07/06/apache-flink-1.11.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -860,7 +860,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/07/14/application-deployment-in-flink-current-state-and-the-new-application-mode/index.html b/content/2020/07/14/application-deployment-in-flink-current-state-and-the-new-application-mode/index.html
index 01dfe8d..f3be648 100644
--- a/content/2020/07/14/application-deployment-in-flink-current-state-and-the-new-application-mode/index.html
+++ b/content/2020/07/14/application-deployment-in-flink-current-state-and-the-new-application-mode/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -856,7 +856,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/07/21/apache-flink-1.11.1-released/index.html b/content/2020/07/21/apache-flink-1.11.1-released/index.html
index 3f26004..a9a88ed 100644
--- a/content/2020/07/21/apache-flink-1.11.1-released/index.html
+++ b/content/2020/07/21/apache-flink-1.11.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -704,7 +704,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/07/23/sharing-is-caring-catalogs-in-flink-sql/index.html b/content/2020/07/23/sharing-is-caring-catalogs-in-flink-sql/index.html
index e88f576..dcf2352 100644
--- a/content/2020/07/23/sharing-is-caring-catalogs-in-flink-sql/index.html
+++ b/content/2020/07/23/sharing-is-caring-catalogs-in-flink-sql/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -764,7 +764,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/07/28/flink-sql-demo-building-an-end-to-end-streaming-application/index.html b/content/2020/07/28/flink-sql-demo-building-an-end-to-end-streaming-application/index.html
index 85d0f65..7ee273a 100644
--- a/content/2020/07/28/flink-sql-demo-building-an-end-to-end-streaming-application/index.html
+++ b/content/2020/07/28/flink-sql-demo-building-an-end-to-end-streaming-application/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -815,7 +815,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/07/29/flink-community-update-july20/index.html b/content/2020/07/29/flink-community-update-july20/index.html
index 3f62e04..22b04f3 100644
--- a/content/2020/07/29/flink-community-update-july20/index.html
+++ b/content/2020/07/29/flink-community-update-july20/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -793,7 +793,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/07/30/advanced-flink-application-patterns-vol.3-custom-window-processing/index.html b/content/2020/07/30/advanced-flink-application-patterns-vol.3-custom-window-processing/index.html
index f5b879e..86c26b9 100644
--- a/content/2020/07/30/advanced-flink-application-patterns-vol.3-custom-window-processing/index.html
+++ b/content/2020/07/30/advanced-flink-application-patterns-vol.3-custom-window-processing/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1210,7 +1210,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/08/04/pyflink-the-integration-of-pandas-into-pyflink/index.html b/content/2020/08/04/pyflink-the-integration-of-pandas-into-pyflink/index.html
index fa2b62a..e24a791 100644
--- a/content/2020/08/04/pyflink-the-integration-of-pandas-into-pyflink/index.html
+++ b/content/2020/08/04/pyflink-the-integration-of-pandas-into-pyflink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -774,7 +774,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/08/06/accelerating-your-workload-with-gpu-and-other-external-resources/index.html b/content/2020/08/06/accelerating-your-workload-with-gpu-and-other-external-resources/index.html
index 4971ec4..bd9503b 100644
--- a/content/2020/08/06/accelerating-your-workload-with-gpu-and-other-external-resources/index.html
+++ b/content/2020/08/06/accelerating-your-workload-with-gpu-and-other-external-resources/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -694,7 +694,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/08/18/monitoring-and-controlling-networks-of-iot-devices-with-flink-stateful-functions/index.html b/content/2020/08/18/monitoring-and-controlling-networks-of-iot-devices-with-flink-stateful-functions/index.html
index 7bc2f72..7d24524 100644
--- a/content/2020/08/18/monitoring-and-controlling-networks-of-iot-devices-with-flink-stateful-functions/index.html
+++ b/content/2020/08/18/monitoring-and-controlling-networks-of-iot-devices-with-flink-stateful-functions/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -766,7 +766,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/08/20/the-state-of-flink-on-docker/index.html b/content/2020/08/20/the-state-of-flink-on-docker/index.html
index 9c0c357..9a8f779 100644
--- a/content/2020/08/20/the-state-of-flink-on-docker/index.html
+++ b/content/2020/08/20/the-state-of-flink-on-docker/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -646,7 +646,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/08/25/apache-flink-1.10.2-released/index.html b/content/2020/08/25/apache-flink-1.10.2-released/index.html
index a55c438..933b83f 100644
--- a/content/2020/08/25/apache-flink-1.10.2-released/index.html
+++ b/content/2020/08/25/apache-flink-1.10.2-released/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -764,7 +764,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/09/01/memory-management-improvements-for-flinks-jobmanager-in-apache-flink-1.11/index.html b/content/2020/09/01/memory-management-improvements-for-flinks-jobmanager-in-apache-flink-1.11/index.html
index 5a40e08..0640494 100644
--- a/content/2020/09/01/memory-management-improvements-for-flinks-jobmanager-in-apache-flink-1.11/index.html
+++ b/content/2020/09/01/memory-management-improvements-for-flinks-jobmanager-in-apache-flink-1.11/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -674,7 +674,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/09/04/flink-community-update-august20/index.html b/content/2020/09/04/flink-community-update-august20/index.html
index cf3bad2..d05e85d 100644
--- a/content/2020/09/04/flink-community-update-august20/index.html
+++ b/content/2020/09/04/flink-community-update-august20/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -809,7 +809,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/09/17/apache-flink-1.11.2-released/index.html b/content/2020/09/17/apache-flink-1.11.2-released/index.html
index a32af57..8a3bb8a 100644
--- a/content/2020/09/17/apache-flink-1.11.2-released/index.html
+++ b/content/2020/09/17/apache-flink-1.11.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -804,7 +804,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/09/28/stateful-functions-2.2.0-release-announcement/index.html b/content/2020/09/28/stateful-functions-2.2.0-release-announcement/index.html
index c11c16e..82c160d 100644
--- a/content/2020/09/28/stateful-functions-2.2.0-release-announcement/index.html
+++ b/content/2020/09/28/stateful-functions-2.2.0-release-announcement/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -758,7 +758,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/10/13/stateful-functions-internals-behind-the-scenes-of-stateful-serverless/index.html b/content/2020/10/13/stateful-functions-internals-behind-the-scenes-of-stateful-serverless/index.html
index 74e5a15..ac5affa 100644
--- a/content/2020/10/13/stateful-functions-internals-behind-the-scenes-of-stateful-serverless/index.html
+++ b/content/2020/10/13/stateful-functions-internals-behind-the-scenes-of-stateful-serverless/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -770,7 +770,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/10/15/from-aligned-to-unaligned-checkpoints-part-1-checkpoints-alignment-and-backpressure/index.html b/content/2020/10/15/from-aligned-to-unaligned-checkpoints-part-1-checkpoints-alignment-and-backpressure/index.html
index de4a3da..7d301c6 100644
--- a/content/2020/10/15/from-aligned-to-unaligned-checkpoints-part-1-checkpoints-alignment-and-backpressure/index.html
+++ b/content/2020/10/15/from-aligned-to-unaligned-checkpoints-part-1-checkpoints-alignment-and-backpressure/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -690,7 +690,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/11/11/stateful-functions-2.2.1-release-announcement/index.html b/content/2020/11/11/stateful-functions-2.2.1-release-announcement/index.html
index eeac0c8..cb4d087 100644
--- a/content/2020/11/11/stateful-functions-2.2.1-release-announcement/index.html
+++ b/content/2020/11/11/stateful-functions-2.2.1-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -629,7 +629,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/12/02/improvements-in-task-scheduling-for-batch-workloads-in-apache-flink-1.12/index.html b/content/2020/12/02/improvements-in-task-scheduling-for-batch-workloads-in-apache-flink-1.12/index.html
index 0b4b163..3481870 100644
--- a/content/2020/12/02/improvements-in-task-scheduling-for-batch-workloads-in-apache-flink-1.12/index.html
+++ b/content/2020/12/02/improvements-in-task-scheduling-for-batch-workloads-in-apache-flink-1.12/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -867,7 +867,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/12/10/apache-flink-1.12.0-release-announcement/index.html b/content/2020/12/10/apache-flink-1.12.0-release-announcement/index.html
index a685772..913b886 100644
--- a/content/2020/12/10/apache-flink-1.12.0-release-announcement/index.html
+++ b/content/2020/12/10/apache-flink-1.12.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -888,7 +888,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2020/12/18/apache-flink-1.11.3-released/index.html b/content/2020/12/18/apache-flink-1.11.3-released/index.html
index c312cac..d671be5 100644
--- a/content/2020/12/18/apache-flink-1.11.3-released/index.html
+++ b/content/2020/12/18/apache-flink-1.11.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -920,7 +920,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/01/02/stateful-functions-2.2.2-release-announcement/index.html b/content/2021/01/02/stateful-functions-2.2.2-release-announcement/index.html
index c98a097..24d42ae 100644
--- a/content/2021/01/02/stateful-functions-2.2.2-release-announcement/index.html
+++ b/content/2021/01/02/stateful-functions-2.2.2-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -596,7 +596,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/01/07/whats-new-in-the-pulsar-flink-connector-2.7.0/index.html b/content/2021/01/07/whats-new-in-the-pulsar-flink-connector-2.7.0/index.html
index a9afa16..fc1ec89 100644
--- a/content/2021/01/07/whats-new-in-the-pulsar-flink-connector-2.7.0/index.html
+++ b/content/2021/01/07/whats-new-in-the-pulsar-flink-connector-2.7.0/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -753,7 +753,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/01/11/exploring-fine-grained-recovery-of-bounded-data-sets-on-flink/index.html b/content/2021/01/11/exploring-fine-grained-recovery-of-bounded-data-sets-on-flink/index.html
index 73138e5..b7ba3af 100644
--- a/content/2021/01/11/exploring-fine-grained-recovery-of-bounded-data-sets-on-flink/index.html
+++ b/content/2021/01/11/exploring-fine-grained-recovery-of-bounded-data-sets-on-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -669,7 +669,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/01/18/using-rocksdb-state-backend-in-apache-flink-when-and-how/index.html b/content/2021/01/18/using-rocksdb-state-backend-in-apache-flink-when-and-how/index.html
index 2858912..62996f1 100644
--- a/content/2021/01/18/using-rocksdb-state-backend-in-apache-flink-when-and-how/index.html
+++ b/content/2021/01/18/using-rocksdb-state-backend-in-apache-flink-when-and-how/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -694,7 +694,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/01/19/apache-flink-1.12.1-released/index.html b/content/2021/01/19/apache-flink-1.12.1-released/index.html
index bb34d17..38802ec 100644
--- a/content/2021/01/19/apache-flink-1.12.1-released/index.html
+++ b/content/2021/01/19/apache-flink-1.12.1-released/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -773,7 +773,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/01/29/apache-flink-1.10.3-released/index.html b/content/2021/01/29/apache-flink-1.10.3-released/index.html
index ec30841..a2c8d75 100644
--- a/content/2021/01/29/apache-flink-1.10.3-released/index.html
+++ b/content/2021/01/29/apache-flink-1.10.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -678,7 +678,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/02/10/how-to-natively-deploy-flink-on-kubernetes-with-high-availability-ha/index.html b/content/2021/02/10/how-to-natively-deploy-flink-on-kubernetes-with-high-availability-ha/index.html
index 788a08e..e15895f 100644
--- a/content/2021/02/10/how-to-natively-deploy-flink-on-kubernetes-with-high-availability-ha/index.html
+++ b/content/2021/02/10/how-to-natively-deploy-flink-on-kubernetes-with-high-availability-ha/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -693,7 +693,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/03/03/apache-flink-1.12.2-released/index.html b/content/2021/03/03/apache-flink-1.12.2-released/index.html
index 025b927..748d81e 100644
--- a/content/2021/03/03/apache-flink-1.12.2-released/index.html
+++ b/content/2021/03/03/apache-flink-1.12.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -783,7 +783,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/03/11/a-rundown-of-batch-execution-mode-in-the-datastream-api/index.html b/content/2021/03/11/a-rundown-of-batch-execution-mode-in-the-datastream-api/index.html
index 929254b..926ee0e 100644
--- a/content/2021/03/11/a-rundown-of-batch-execution-mode-in-the-datastream-api/index.html
+++ b/content/2021/03/11/a-rundown-of-batch-execution-mode-in-the-datastream-api/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -769,7 +769,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/04/15/stateful-functions-3.0.0-remote-functions-front-and-center/index.html b/content/2021/04/15/stateful-functions-3.0.0-remote-functions-front-and-center/index.html
index 1a691d4..dc079f1 100644
--- a/content/2021/04/15/stateful-functions-3.0.0-remote-functions-front-and-center/index.html
+++ b/content/2021/04/15/stateful-functions-3.0.0-remote-functions-front-and-center/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -762,7 +762,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/04/29/apache-flink-1.12.3-released/index.html b/content/2021/04/29/apache-flink-1.12.3-released/index.html
index 754ee3a..14eeee5 100644
--- a/content/2021/04/29/apache-flink-1.12.3-released/index.html
+++ b/content/2021/04/29/apache-flink-1.12.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -750,7 +750,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/05/03/apache-flink-1.13.0-release-announcement/index.html b/content/2021/05/03/apache-flink-1.13.0-release-announcement/index.html
index 6bd7479..b86cf43 100644
--- a/content/2021/05/03/apache-flink-1.13.0-release-announcement/index.html
+++ b/content/2021/05/03/apache-flink-1.13.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1129,7 +1129,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/05/06/scaling-flink-automatically-with-reactive-mode/index.html b/content/2021/05/06/scaling-flink-automatically-with-reactive-mode/index.html
index 0f1e559..9fc3399 100644
--- a/content/2021/05/06/scaling-flink-automatically-with-reactive-mode/index.html
+++ b/content/2021/05/06/scaling-flink-automatically-with-reactive-mode/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -694,7 +694,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/05/21/apache-flink-1.12.4-released/index.html b/content/2021/05/21/apache-flink-1.12.4-released/index.html
index 0b35fb3..0b8a3de 100644
--- a/content/2021/05/21/apache-flink-1.12.4-released/index.html
+++ b/content/2021/05/21/apache-flink-1.12.4-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -644,7 +644,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/05/28/apache-flink-1.13.1-released/index.html b/content/2021/05/28/apache-flink-1.13.1-released/index.html
index a2f730c..697043f 100644
--- a/content/2021/05/28/apache-flink-1.13.1-released/index.html
+++ b/content/2021/05/28/apache-flink-1.13.1-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -713,7 +713,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/07/07/how-to-identify-the-source-of-backpressure/index.html b/content/2021/07/07/how-to-identify-the-source-of-backpressure/index.html
index ae62968..3f5a8ce 100644
--- a/content/2021/07/07/how-to-identify-the-source-of-backpressure/index.html
+++ b/content/2021/07/07/how-to-identify-the-source-of-backpressure/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -757,7 +757,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/08/06/apache-flink-1.12.5-released/index.html b/content/2021/08/06/apache-flink-1.12.5-released/index.html
index 3211135..b9aa57f 100644
--- a/content/2021/08/06/apache-flink-1.12.5-released/index.html
+++ b/content/2021/08/06/apache-flink-1.12.5-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -754,7 +754,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/08/06/apache-flink-1.13.2-released/index.html b/content/2021/08/06/apache-flink-1.13.2-released/index.html
index c426542..118100b 100644
--- a/content/2021/08/06/apache-flink-1.13.2-released/index.html
+++ b/content/2021/08/06/apache-flink-1.13.2-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -866,7 +866,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/08/09/apache-flink-1.11.4-released/index.html b/content/2021/08/09/apache-flink-1.11.4-released/index.html
index 5028b5b..c0e558a 100644
--- a/content/2021/08/09/apache-flink-1.11.4-released/index.html
+++ b/content/2021/08/09/apache-flink-1.11.4-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -763,7 +763,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/08/31/help-us-stabilize-apache-flink-1.14.0-rc0/index.html b/content/2021/08/31/help-us-stabilize-apache-flink-1.14.0-rc0/index.html
index 35be1a1..4d219ad 100644
--- a/content/2021/08/31/help-us-stabilize-apache-flink-1.14.0-rc0/index.html
+++ b/content/2021/08/31/help-us-stabilize-apache-flink-1.14.0-rc0/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -598,7 +598,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/08/31/stateful-functions-3.1.0-release-announcement/index.html b/content/2021/08/31/stateful-functions-3.1.0-release-announcement/index.html
index c1c557d..8d8d69e 100644
--- a/content/2021/08/31/stateful-functions-3.1.0-release-announcement/index.html
+++ b/content/2021/08/31/stateful-functions-3.1.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -788,7 +788,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/09/07/implementing-a-custom-source-connector-for-table-api-and-sql-part-one/index.html b/content/2021/09/07/implementing-a-custom-source-connector-for-table-api-and-sql-part-one/index.html
index 2dd38a8..50451e1 100644
--- a/content/2021/09/07/implementing-a-custom-source-connector-for-table-api-and-sql-part-one/index.html
+++ b/content/2021/09/07/implementing-a-custom-source-connector-for-table-api-and-sql-part-one/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -770,7 +770,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/09/07/implementing-a-custom-source-connector-for-table-api-and-sql-part-two/index.html b/content/2021/09/07/implementing-a-custom-source-connector-for-table-api-and-sql-part-two/index.html
index 5c3be85..7b09604 100644
--- a/content/2021/09/07/implementing-a-custom-source-connector-for-table-api-and-sql-part-two/index.html
+++ b/content/2021/09/07/implementing-a-custom-source-connector-for-table-api-and-sql-part-two/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1013,7 +1013,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/09/29/apache-flink-1.14.0-release-announcement/index.html b/content/2021/09/29/apache-flink-1.14.0-release-announcement/index.html
index 022d7bc..2f2e011 100644
--- a/content/2021/09/29/apache-flink-1.14.0-release-announcement/index.html
+++ b/content/2021/09/29/apache-flink-1.14.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -926,7 +926,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/10/19/apache-flink-1.13.3-released/index.html b/content/2021/10/19/apache-flink-1.13.3-released/index.html
index c72bdd1..2e8d14f 100644
--- a/content/2021/10/19/apache-flink-1.13.3-released/index.html
+++ b/content/2021/10/19/apache-flink-1.13.3-released/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -641,7 +641,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/10/26/sort-based-blocking-shuffle-implementation-in-flink-part-one/index.html b/content/2021/10/26/sort-based-blocking-shuffle-implementation-in-flink-part-one/index.html
index 5b90b88..69389a4 100644
--- a/content/2021/10/26/sort-based-blocking-shuffle-implementation-in-flink-part-one/index.html
+++ b/content/2021/10/26/sort-based-blocking-shuffle-implementation-in-flink-part-one/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -781,7 +781,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/10/26/sort-based-blocking-shuffle-implementation-in-flink-part-two/index.html b/content/2021/10/26/sort-based-blocking-shuffle-implementation-in-flink-part-two/index.html
index 0906980..45afef1 100644
--- a/content/2021/10/26/sort-based-blocking-shuffle-implementation-in-flink-part-two/index.html
+++ b/content/2021/10/26/sort-based-blocking-shuffle-implementation-in-flink-part-two/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -730,7 +730,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/11/03/flink-backward-the-apache-flink-retrospective/index.html b/content/2021/11/03/flink-backward-the-apache-flink-retrospective/index.html
index cbc8821..a2ea8fa 100644
--- a/content/2021/11/03/flink-backward-the-apache-flink-retrospective/index.html
+++ b/content/2021/11/03/flink-backward-the-apache-flink-retrospective/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -649,7 +649,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/12/10/advise-on-apache-log4j-zero-day-cve-2021-44228/index.html b/content/2021/12/10/advise-on-apache-log4j-zero-day-cve-2021-44228/index.html
index 5278e08..476a3f7 100644
--- a/content/2021/12/10/advise-on-apache-log4j-zero-day-cve-2021-44228/index.html
+++ b/content/2021/12/10/advise-on-apache-log4j-zero-day-cve-2021-44228/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -584,7 +584,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/12/16/apache-flink-log4j-emergency-releases/index.html b/content/2021/12/16/apache-flink-log4j-emergency-releases/index.html
index a749b23..7026c56 100644
--- a/content/2021/12/16/apache-flink-log4j-emergency-releases/index.html
+++ b/content/2021/12/16/apache-flink-log4j-emergency-releases/index.html
@@ -34,7 +34,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -596,7 +596,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2021/12/22/apache-flink-statefun-log4j-emergency-release/index.html b/content/2021/12/22/apache-flink-statefun-log4j-emergency-release/index.html
index 36f9dbe..3413a1a 100644
--- a/content/2021/12/22/apache-flink-statefun-log4j-emergency-release/index.html
+++ b/content/2021/12/22/apache-flink-statefun-log4j-emergency-release/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -578,7 +578,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/01/04/how-we-improved-scheduler-performance-for-large-scale-jobs-part-one/index.html b/content/2022/01/04/how-we-improved-scheduler-performance-for-large-scale-jobs-part-one/index.html
index cd5941e..042e33d 100644
--- a/content/2022/01/04/how-we-improved-scheduler-performance-for-large-scale-jobs-part-one/index.html
+++ b/content/2022/01/04/how-we-improved-scheduler-performance-for-large-scale-jobs-part-one/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -636,7 +636,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/01/04/how-we-improved-scheduler-performance-for-large-scale-jobs-part-two/index.html b/content/2022/01/04/how-we-improved-scheduler-performance-for-large-scale-jobs-part-two/index.html
index 26dd6d3..39bd7e4 100644
--- a/content/2022/01/04/how-we-improved-scheduler-performance-for-large-scale-jobs-part-two/index.html
+++ b/content/2022/01/04/how-we-improved-scheduler-performance-for-large-scale-jobs-part-two/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -705,7 +705,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/01/07/apache-flink-ml-2.0.0-release-announcement/index.html b/content/2022/01/07/apache-flink-ml-2.0.0-release-announcement/index.html
index b352a62..597ef20 100644
--- a/content/2022/01/07/apache-flink-ml-2.0.0-release-announcement/index.html
+++ b/content/2022/01/07/apache-flink-ml-2.0.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -834,7 +834,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/01/17/apache-flink-1.14.3-release-announcement/index.html b/content/2022/01/17/apache-flink-1.14.3-release-announcement/index.html
index 7374d0f..55d9d93 100644
--- a/content/2022/01/17/apache-flink-1.14.3-release-announcement/index.html
+++ b/content/2022/01/17/apache-flink-1.14.3-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -873,7 +873,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/01/20/pravega-flink-connector-101/index.html b/content/2022/01/20/pravega-flink-connector-101/index.html
index db4d320..28ec6ea 100644
--- a/content/2022/01/20/pravega-flink-connector-101/index.html
+++ b/content/2022/01/20/pravega-flink-connector-101/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -793,7 +793,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/01/31/stateful-functions-3.2.0-release-announcement/index.html b/content/2022/01/31/stateful-functions-3.2.0-release-announcement/index.html
index f68eb97..a3afc04 100644
--- a/content/2022/01/31/stateful-functions-3.2.0-release-announcement/index.html
+++ b/content/2022/01/31/stateful-functions-3.2.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -680,7 +680,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/02/18/apache-flink-1.13.6-release-announcement/index.html b/content/2022/02/18/apache-flink-1.13.6-release-announcement/index.html
index db8e6fc..c552af4 100644
--- a/content/2022/02/18/apache-flink-1.13.6-release-announcement/index.html
+++ b/content/2022/02/18/apache-flink-1.13.6-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -774,7 +774,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/02/22/scala-free-in-one-fifteen/index.html b/content/2022/02/22/scala-free-in-one-fifteen/index.html
index c210db9..2143c04 100644
--- a/content/2022/02/22/scala-free-in-one-fifteen/index.html
+++ b/content/2022/02/22/scala-free-in-one-fifteen/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -659,7 +659,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/03/11/apache-flink-1.14.4-release-announcement/index.html b/content/2022/03/11/apache-flink-1.14.4-release-announcement/index.html
index 7980ad5..6fb02d5 100644
--- a/content/2022/03/11/apache-flink-1.14.4-release-announcement/index.html
+++ b/content/2022/03/11/apache-flink-1.14.4-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -743,7 +743,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/03/16/the-generic-asynchronous-base-sink/index.html b/content/2022/03/16/the-generic-asynchronous-base-sink/index.html
index 796b5be..ef7fc9d 100644
--- a/content/2022/03/16/the-generic-asynchronous-base-sink/index.html
+++ b/content/2022/03/16/the-generic-asynchronous-base-sink/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -720,7 +720,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/04/03/apache-flink-kubernetes-operator-0.1.0-release-announcement/index.html b/content/2022/04/03/apache-flink-kubernetes-operator-0.1.0-release-announcement/index.html
index db23029..f396ad4 100644
--- a/content/2022/04/03/apache-flink-kubernetes-operator-0.1.0-release-announcement/index.html
+++ b/content/2022/04/03/apache-flink-kubernetes-operator-0.1.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -683,7 +683,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/05/05/announcing-the-release-of-apache-flink-1.15/index.html b/content/2022/05/05/announcing-the-release-of-apache-flink-1.15/index.html
index f879402..5ecb5eb 100644
--- a/content/2022/05/05/announcing-the-release-of-apache-flink-1.15/index.html
+++ b/content/2022/05/05/announcing-the-release-of-apache-flink-1.15/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1007,7 +1007,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/05/06/exploring-the-thread-mode-in-pyflink/index.html b/content/2022/05/06/exploring-the-thread-mode-in-pyflink/index.html
index 6550745..c691cd2 100644
--- a/content/2022/05/06/exploring-the-thread-mode-in-pyflink/index.html
+++ b/content/2022/05/06/exploring-the-thread-mode-in-pyflink/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1025,7 +1025,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/05/06/improvements-to-flink-operations-snapshots-ownership-and-savepoint-formats/index.html b/content/2022/05/06/improvements-to-flink-operations-snapshots-ownership-and-savepoint-formats/index.html
index f3c8f70..e01c568 100644
--- a/content/2022/05/06/improvements-to-flink-operations-snapshots-ownership-and-savepoint-formats/index.html
+++ b/content/2022/05/06/improvements-to-flink-operations-snapshots-ownership-and-savepoint-formats/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -849,7 +849,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/05/11/apache-flink-table-store-0.1.0-release-announcement/index.html b/content/2022/05/11/apache-flink-table-store-0.1.0-release-announcement/index.html
index 42632e6..9bfb06e 100644
--- a/content/2022/05/11/apache-flink-table-store-0.1.0-release-announcement/index.html
+++ b/content/2022/05/11/apache-flink-table-store-0.1.0-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -672,7 +672,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/05/18/getting-into-low-latency-gears-with-apache-flink-part-one/index.html b/content/2022/05/18/getting-into-low-latency-gears-with-apache-flink-part-one/index.html
index 8c846e8..ef29691 100644
--- a/content/2022/05/18/getting-into-low-latency-gears-with-apache-flink-part-one/index.html
+++ b/content/2022/05/18/getting-into-low-latency-gears-with-apache-flink-part-one/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -676,7 +676,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/05/23/getting-into-low-latency-gears-with-apache-flink-part-two/index.html b/content/2022/05/23/getting-into-low-latency-gears-with-apache-flink-part-two/index.html
index ecb52f7..7034275 100644
--- a/content/2022/05/23/getting-into-low-latency-gears-with-apache-flink-part-two/index.html
+++ b/content/2022/05/23/getting-into-low-latency-gears-with-apache-flink-part-two/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -666,7 +666,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/05/30/improving-speed-and-stability-of-checkpointing-with-generic-log-based-incremental-checkpoints/index.html b/content/2022/05/30/improving-speed-and-stability-of-checkpointing-with-generic-log-based-incremental-checkpoints/index.html
index 2113bb2..8388f08 100644
--- a/content/2022/05/30/improving-speed-and-stability-of-checkpointing-with-generic-log-based-incremental-checkpoints/index.html
+++ b/content/2022/05/30/improving-speed-and-stability-of-checkpointing-with-generic-log-based-incremental-checkpoints/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -969,7 +969,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/06/05/apache-flink-kubernetes-operator-1.0.0-release-announcement/index.html b/content/2022/06/05/apache-flink-kubernetes-operator-1.0.0-release-announcement/index.html
index be573c3..5c81fc8 100644
--- a/content/2022/06/05/apache-flink-kubernetes-operator-1.0.0-release-announcement/index.html
+++ b/content/2022/06/05/apache-flink-kubernetes-operator-1.0.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -721,7 +721,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/06/17/adaptive-batch-scheduler-automatically-decide-parallelism-of-flink-batch-jobs/index.html b/content/2022/06/17/adaptive-batch-scheduler-automatically-decide-parallelism-of-flink-batch-jobs/index.html
index f8e772c..d4886bf 100644
--- a/content/2022/06/17/adaptive-batch-scheduler-automatically-decide-parallelism-of-flink-batch-jobs/index.html
+++ b/content/2022/06/17/adaptive-batch-scheduler-automatically-decide-parallelism-of-flink-batch-jobs/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -791,7 +791,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/06/22/apache-flink-1.14.5-release-announcement/index.html b/content/2022/06/22/apache-flink-1.14.5-release-announcement/index.html
index bfd8bfd..3599649 100644
--- a/content/2022/06/22/apache-flink-1.14.5-release-announcement/index.html
+++ b/content/2022/06/22/apache-flink-1.14.5-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -761,7 +761,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/07/06/apache-flink-1.15.1-release-announcement/index.html b/content/2022/07/06/apache-flink-1.15.1-release-announcement/index.html
index f5b16aa..bafa5e8 100644
--- a/content/2022/07/06/apache-flink-1.15.1-release-announcement/index.html
+++ b/content/2022/07/06/apache-flink-1.15.1-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -764,7 +764,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/07/11/flip-147-support-checkpoints-after-tasks-finished-part-one/index.html b/content/2022/07/11/flip-147-support-checkpoints-after-tasks-finished-part-one/index.html
index 7b4beb9..2d8e1f6 100644
--- a/content/2022/07/11/flip-147-support-checkpoints-after-tasks-finished-part-one/index.html
+++ b/content/2022/07/11/flip-147-support-checkpoints-after-tasks-finished-part-one/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -727,7 +727,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/07/11/flip-147-support-checkpoints-after-tasks-finished-part-two/index.html b/content/2022/07/11/flip-147-support-checkpoints-after-tasks-finished-part-two/index.html
index 63b1a11..3ffa61a 100644
--- a/content/2022/07/11/flip-147-support-checkpoints-after-tasks-finished-part-two/index.html
+++ b/content/2022/07/11/flip-147-support-checkpoints-after-tasks-finished-part-two/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -800,7 +800,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/07/12/apache-flink-ml-2.1.0-release-announcement/index.html b/content/2022/07/12/apache-flink-ml-2.1.0-release-announcement/index.html
index 5192481..6406478 100644
--- a/content/2022/07/12/apache-flink-ml-2.1.0-release-announcement/index.html
+++ b/content/2022/07/12/apache-flink-ml-2.1.0-release-announcement/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -733,7 +733,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/07/25/apache-flink-kubernetes-operator-1.1.0-release-announcement/index.html b/content/2022/07/25/apache-flink-kubernetes-operator-1.1.0-release-announcement/index.html
index 809d4a0..5722e2a 100644
--- a/content/2022/07/25/apache-flink-kubernetes-operator-1.1.0-release-announcement/index.html
+++ b/content/2022/07/25/apache-flink-kubernetes-operator-1.1.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -705,7 +705,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/08/24/apache-flink-1.15.2-release-announcement/index.html b/content/2022/08/24/apache-flink-1.15.2-release-announcement/index.html
index 785cbcc..a4bf2d2 100644
--- a/content/2022/08/24/apache-flink-1.15.2-release-announcement/index.html
+++ b/content/2022/08/24/apache-flink-1.15.2-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -716,7 +716,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/08/29/apache-flink-table-store-0.2.0-release-announcement/index.html b/content/2022/08/29/apache-flink-table-store-0.2.0-release-announcement/index.html
index 5c6700a..ccd6050 100644
--- a/content/2022/08/29/apache-flink-table-store-0.2.0-release-announcement/index.html
+++ b/content/2022/08/29/apache-flink-table-store-0.2.0-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -767,7 +767,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/09/08/regarding-akkas-licensing-change/index.html b/content/2022/09/08/regarding-akkas-licensing-change/index.html
index 0036e33..480a92a 100644
--- a/content/2022/09/08/regarding-akkas-licensing-change/index.html
+++ b/content/2022/09/08/regarding-akkas-licensing-change/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -628,7 +628,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/09/28/apache-flink-1.14.6-release-announcement/index.html b/content/2022/09/28/apache-flink-1.14.6-release-announcement/index.html
index cee7ecc..cba2686 100644
--- a/content/2022/09/28/apache-flink-1.14.6-release-announcement/index.html
+++ b/content/2022/09/28/apache-flink-1.14.6-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -681,7 +681,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/10/07/apache-flink-kubernetes-operator-1.2.0-release-announcement/index.html b/content/2022/10/07/apache-flink-kubernetes-operator-1.2.0-release-announcement/index.html
index 7686b59..17e15b4 100644
--- a/content/2022/10/07/apache-flink-kubernetes-operator-1.2.0-release-announcement/index.html
+++ b/content/2022/10/07/apache-flink-kubernetes-operator-1.2.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -641,7 +641,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/10/13/apache-flink-table-store-0.2.1-release-announcement/index.html b/content/2022/10/13/apache-flink-table-store-0.2.1-release-announcement/index.html
index 044d72e..6082f5d 100644
--- a/content/2022/10/13/apache-flink-table-store-0.2.1-release-announcement/index.html
+++ b/content/2022/10/13/apache-flink-table-store-0.2.1-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -632,7 +632,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/10/28/announcing-the-release-of-apache-flink-1.16/index.html b/content/2022/10/28/announcing-the-release-of-apache-flink-1.16/index.html
index b39711b..54fb592 100644
--- a/content/2022/10/28/announcing-the-release-of-apache-flink-1.16/index.html
+++ b/content/2022/10/28/announcing-the-release-of-apache-flink-1.16/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1063,7 +1063,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/11/10/apache-flink-1.15.3-release-announcement/index.html b/content/2022/11/10/apache-flink-1.15.3-release-announcement/index.html
index feb033e..cdd2fbd 100644
--- a/content/2022/11/10/apache-flink-1.15.3-release-announcement/index.html
+++ b/content/2022/11/10/apache-flink-1.15.3-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -753,7 +753,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/11/25/optimising-the-throughput-of-async-sinks-using-a-custom-ratelimitingstrategy/index.html b/content/2022/11/25/optimising-the-throughput-of-async-sinks-using-a-custom-ratelimitingstrategy/index.html
index 211badc..cb6731b 100644
--- a/content/2022/11/25/optimising-the-throughput-of-async-sinks-using-a-custom-ratelimitingstrategy/index.html
+++ b/content/2022/11/25/optimising-the-throughput-of-async-sinks-using-a-custom-ratelimitingstrategy/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -754,7 +754,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2022/12/14/apache-flink-kubernetes-operator-1.3.0-release-announcement/index.html b/content/2022/12/14/apache-flink-kubernetes-operator-1.3.0-release-announcement/index.html
index 06bae41..4cab75c 100644
--- a/content/2022/12/14/apache-flink-kubernetes-operator-1.3.0-release-announcement/index.html
+++ b/content/2022/12/14/apache-flink-kubernetes-operator-1.3.0-release-announcement/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -643,7 +643,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/01/10/apache-flink-kubernetes-operator-1.3.1-release-announcement/index.html b/content/2023/01/10/apache-flink-kubernetes-operator-1.3.1-release-announcement/index.html
index 31cfbe4..88bf55e 100644
--- a/content/2023/01/10/apache-flink-kubernetes-operator-1.3.1-release-announcement/index.html
+++ b/content/2023/01/10/apache-flink-kubernetes-operator-1.3.1-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -629,7 +629,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/01/13/apache-flink-table-store-0.3.0-release-announcement/index.html b/content/2023/01/13/apache-flink-table-store-0.3.0-release-announcement/index.html
index 107f1bf..4b1a60e 100644
--- a/content/2023/01/13/apache-flink-table-store-0.3.0-release-announcement/index.html
+++ b/content/2023/01/13/apache-flink-table-store-0.3.0-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -793,7 +793,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/01/20/delegation-token-framework-obtain-distribute-and-use-temporary-credentials-automatically/index.html b/content/2023/01/20/delegation-token-framework-obtain-distribute-and-use-temporary-credentials-automatically/index.html
index 36d30d8..5691e9b 100644
--- a/content/2023/01/20/delegation-token-framework-obtain-distribute-and-use-temporary-credentials-automatically/index.html
+++ b/content/2023/01/20/delegation-token-framework-obtain-distribute-and-use-temporary-credentials-automatically/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -674,7 +674,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/01/30/apache-flink-1.16.1-release-announcement/index.html b/content/2023/01/30/apache-flink-1.16.1-release-announcement/index.html
index 1f8188e..b1ab359 100644
--- a/content/2023/01/30/apache-flink-1.16.1-release-announcement/index.html
+++ b/content/2023/01/30/apache-flink-1.16.1-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -807,7 +807,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/02/27/apache-flink-kubernetes-operator-1.4.0-release-announcement/index.html b/content/2023/02/27/apache-flink-kubernetes-operator-1.4.0-release-announcement/index.html
index 335163f..8c2dcef 100644
--- a/content/2023/02/27/apache-flink-kubernetes-operator-1.4.0-release-announcement/index.html
+++ b/content/2023/02/27/apache-flink-kubernetes-operator-1.4.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -671,7 +671,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/03/15/apache-flink-1.15.4-release-announcement/index.html b/content/2023/03/15/apache-flink-1.15.4-release-announcement/index.html
index 1040d6f..1e95bd3 100644
--- a/content/2023/03/15/apache-flink-1.15.4-release-announcement/index.html
+++ b/content/2023/03/15/apache-flink-1.15.4-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -716,7 +716,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/03/23/announcing-the-release-of-apache-flink-1.17/index.html b/content/2023/03/23/announcing-the-release-of-apache-flink-1.17/index.html
index 7f03dcd..f033f74 100644
--- a/content/2023/03/23/announcing-the-release-of-apache-flink-1.17/index.html
+++ b/content/2023/03/23/announcing-the-release-of-apache-flink-1.17/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1050,7 +1050,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/04/19/apache-flink-ml-2.2.0-release-announcement/index.html b/content/2023/04/19/apache-flink-ml-2.2.0-release-announcement/index.html
index 86e24db..b5e9067 100644
--- a/content/2023/04/19/apache-flink-ml-2.2.0-release-announcement/index.html
+++ b/content/2023/04/19/apache-flink-ml-2.2.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -683,7 +683,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/05/03/howto-create-a-batch-source-with-the-new-source-framework/index.html b/content/2023/05/03/howto-create-a-batch-source-with-the-new-source-framework/index.html
index 9c145ad..495b32a 100644
--- a/content/2023/05/03/howto-create-a-batch-source-with-the-new-source-framework/index.html
+++ b/content/2023/05/03/howto-create-a-batch-source-with-the-new-source-framework/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -854,7 +854,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/05/09/howto-migrate-a-real-life-batch-pipeline-from-the-dataset-api-to-the-datastream-api/index.html b/content/2023/05/09/howto-migrate-a-real-life-batch-pipeline-from-the-dataset-api-to-the-datastream-api/index.html
index 01c75d8..6fb022d 100644
--- a/content/2023/05/09/howto-migrate-a-real-life-batch-pipeline-from-the-dataset-api-to-the-datastream-api/index.html
+++ b/content/2023/05/09/howto-migrate-a-real-life-batch-pipeline-from-the-dataset-api-to-the-datastream-api/index.html
@@ -26,7 +26,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -758,7 +758,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/05/12/howto-test-a-batch-source-with-the-new-source-framework/index.html b/content/2023/05/12/howto-test-a-batch-source-with-the-new-source-framework/index.html
index bcacfaf..5bf77fa 100644
--- a/content/2023/05/12/howto-test-a-batch-source-with-the-new-source-framework/index.html
+++ b/content/2023/05/12/howto-test-a-batch-source-with-the-new-source-framework/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -789,7 +789,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/05/17/apache-flink-kubernetes-operator-1.5.0-release-announcement/index.html b/content/2023/05/17/apache-flink-kubernetes-operator-1.5.0-release-announcement/index.html
index dfd7e19..1d3fcfd 100644
--- a/content/2023/05/17/apache-flink-kubernetes-operator-1.5.0-release-announcement/index.html
+++ b/content/2023/05/17/apache-flink-kubernetes-operator-1.5.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -681,7 +681,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/05/25/apache-flink-1.16.2-release-announcement/index.html b/content/2023/05/25/apache-flink-1.16.2-release-announcement/index.html
index 5a3a101..cfa5c77 100644
--- a/content/2023/05/25/apache-flink-1.16.2-release-announcement/index.html
+++ b/content/2023/05/25/apache-flink-1.16.2-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -788,7 +788,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/05/25/apache-flink-1.17.1-release-announcement/index.html b/content/2023/05/25/apache-flink-1.17.1-release-announcement/index.html
index f2e68d9..eb6836e 100644
--- a/content/2023/05/25/apache-flink-1.17.1-release-announcement/index.html
+++ b/content/2023/05/25/apache-flink-1.17.1-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -770,7 +770,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/07/03/sigmod-systems-award-for-apache-flink/index.html b/content/2023/07/03/sigmod-systems-award-for-apache-flink/index.html
index f853b25..ffcf347 100644
--- a/content/2023/07/03/sigmod-systems-award-for-apache-flink/index.html
+++ b/content/2023/07/03/sigmod-systems-award-for-apache-flink/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -577,7 +577,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/08/04/announcing-three-new-apache-flink-connectors-the-new-connector-versioning-strategy-and-externalization/index.html b/content/2023/08/04/announcing-three-new-apache-flink-connectors-the-new-connector-versioning-strategy-and-externalization/index.html
index 2201594..b1050d2 100644
--- a/content/2023/08/04/announcing-three-new-apache-flink-connectors-the-new-connector-versioning-strategy-and-externalization/index.html
+++ b/content/2023/08/04/announcing-three-new-apache-flink-connectors-the-new-connector-versioning-strategy-and-externalization/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -679,7 +679,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/08/15/apache-flink-kubernetes-operator-1.6.0-release-announcement/index.html b/content/2023/08/15/apache-flink-kubernetes-operator-1.6.0-release-announcement/index.html
index 89ef975..bbe6ecd 100644
--- a/content/2023/08/15/apache-flink-kubernetes-operator-1.6.0-release-announcement/index.html
+++ b/content/2023/08/15/apache-flink-kubernetes-operator-1.6.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -652,7 +652,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/09/19/stateful-functions-3.3.0-release-announcement/index.html b/content/2023/09/19/stateful-functions-3.3.0-release-announcement/index.html
index 7ec5680..f3a9267 100644
--- a/content/2023/09/19/stateful-functions-3.3.0-release-announcement/index.html
+++ b/content/2023/09/19/stateful-functions-3.3.0-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -632,7 +632,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/10/24/announcing-the-release-of-apache-flink-1.18/index.html b/content/2023/10/24/announcing-the-release-of-apache-flink-1.18/index.html
index 186dec9..ede5f84 100644
--- a/content/2023/10/24/announcing-the-release-of-apache-flink-1.18/index.html
+++ b/content/2023/10/24/announcing-the-release-of-apache-flink-1.18/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1230,7 +1230,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/10/27/apache-flink-kubernetes-operator-1.6.1-release-announcement/index.html b/content/2023/10/27/apache-flink-kubernetes-operator-1.6.1-release-announcement/index.html
index ffc6fcb..d7cef9f 100644
--- a/content/2023/10/27/apache-flink-kubernetes-operator-1.6.1-release-announcement/index.html
+++ b/content/2023/10/27/apache-flink-kubernetes-operator-1.6.1-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -625,7 +625,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/11/22/apache-flink-kubernetes-operator-1.7.0-release-announcement/index.html b/content/2023/11/22/apache-flink-kubernetes-operator-1.7.0-release-announcement/index.html
index b845837..ec5a2b7 100644
--- a/content/2023/11/22/apache-flink-kubernetes-operator-1.7.0-release-announcement/index.html
+++ b/content/2023/11/22/apache-flink-kubernetes-operator-1.7.0-release-announcement/index.html
@@ -28,7 +28,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -670,7 +670,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/11/29/apache-flink-1.16.3-release-announcement/index.html b/content/2023/11/29/apache-flink-1.16.3-release-announcement/index.html
index a89b5a2..7423ab4 100644
--- a/content/2023/11/29/apache-flink-1.16.3-release-announcement/index.html
+++ b/content/2023/11/29/apache-flink-1.16.3-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -715,7 +715,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2023/11/29/apache-flink-1.17.2-release-announcement/index.html b/content/2023/11/29/apache-flink-1.17.2-release-announcement/index.html
index 0e8ec0d..85e588c 100644
--- a/content/2023/11/29/apache-flink-1.17.2-release-announcement/index.html
+++ b/content/2023/11/29/apache-flink-1.17.2-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -773,7 +773,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2024/01/19/apache-flink-1.18.1-release-announcement/index.html b/content/2024/01/19/apache-flink-1.18.1-release-announcement/index.html
index 1ef6ee4..5cb4473 100644
--- a/content/2024/01/19/apache-flink-1.18.1-release-announcement/index.html
+++ b/content/2024/01/19/apache-flink-1.18.1-release-announcement/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -703,7 +703,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2024/03/18/announcing-the-release-of-apache-flink-1.19/index.html b/content/2024/03/18/announcing-the-release-of-apache-flink-1.19/index.html
index d8b094a..e18c1b4 100644
--- a/content/2024/03/18/announcing-the-release-of-apache-flink-1.19/index.html
+++ b/content/2024/03/18/announcing-the-release-of-apache-flink-1.19/index.html
@@ -30,7 +30,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1123,7 +1123,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/2024/03/21/apache-flink-kubernetes-operator-1.8.0-release-announcement/index.html b/content/2024/03/21/apache-flink-kubernetes-operator-1.8.0-release-announcement/index.html
index a3841dc..1005ab1 100644
--- a/content/2024/03/21/apache-flink-kubernetes-operator-1.8.0-release-announcement/index.html
+++ b/content/2024/03/21/apache-flink-kubernetes-operator-1.8.0-release-announcement/index.html
@@ -32,7 +32,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -752,7 +752,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/404.html b/content/404.html
index 735a18c..5b10113 100644
--- a/content/404.html
+++ b/content/404.html
@@ -15,7 +15,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/404.html" title="404 Page not found">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
diff --git a/content/categories/index.html b/content/categories/index.html
index 665aa0d..bd946d1 100644
--- a/content/categories/index.html
+++ b/content/categories/index.html
@@ -26,7 +26,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/categories/" title="Categories">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/categories/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -544,7 +544,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flink-cdc-master/index.html b/content/documentation/flink-cdc-master/index.html
index aff6a70..541a8c9 100644
--- a/content/documentation/flink-cdc-master/index.html
+++ b/content/documentation/flink-cdc-master/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flink-cdc-master/" title="CDC Master (snapshot)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flink-cdc-stable/index.html b/content/documentation/flink-cdc-stable/index.html
index a6fc63a..5646dac 100644
--- a/content/documentation/flink-cdc-stable/index.html
+++ b/content/documentation/flink-cdc-stable/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flink-cdc-stable/" title="CDC 3.0 (stable)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flink-kubernetes-operator-master/index.html b/content/documentation/flink-kubernetes-operator-master/index.html
index 1198046..8927c51 100644
--- a/content/documentation/flink-kubernetes-operator-master/index.html
+++ b/content/documentation/flink-kubernetes-operator-master/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flink-kubernetes-operator-master/" title="Kubernetes Operator Main (snapshot)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flink-kubernetes-operator-stable/index.html b/content/documentation/flink-kubernetes-operator-stable/index.html
index d41c0f1..a8be0c3 100644
--- a/content/documentation/flink-kubernetes-operator-stable/index.html
+++ b/content/documentation/flink-kubernetes-operator-stable/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flink-kubernetes-operator-stable/" title="Kubernetes Operator 1.8 (latest)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flink-master/index.html b/content/documentation/flink-master/index.html
index af1a8f2..92684a1 100644
--- a/content/documentation/flink-master/index.html
+++ b/content/documentation/flink-master/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flink-master/" title="Flink Master (snapshot)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flink-stable/index.html b/content/documentation/flink-stable/index.html
index e78329b..095750d 100644
--- a/content/documentation/flink-stable/index.html
+++ b/content/documentation/flink-stable/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flink-stable/" title="Flink 1.19 (stable)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flink-stateful-functions-master/index.html b/content/documentation/flink-stateful-functions-master/index.html
index 1b484cb..ac89742 100644
--- a/content/documentation/flink-stateful-functions-master/index.html
+++ b/content/documentation/flink-stateful-functions-master/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flink-stateful-functions-master/" title="Stateful Functions Master (snapshot)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flink-stateful-functions-stable/index.html b/content/documentation/flink-stateful-functions-stable/index.html
index d3db178..51394c3 100644
--- a/content/documentation/flink-stateful-functions-stable/index.html
+++ b/content/documentation/flink-stateful-functions-stable/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flink-stateful-functions-stable/" title="Stateful Functions 3.3 (stable)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flinkml-master/index.html b/content/documentation/flinkml-master/index.html
index c4998ee..6c36977 100644
--- a/content/documentation/flinkml-master/index.html
+++ b/content/documentation/flinkml-master/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flinkml-master/" title="ML Master (snapshot)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/flinkml-stable/index.html b/content/documentation/flinkml-stable/index.html
index c0590e8..24fc568 100644
--- a/content/documentation/flinkml-stable/index.html
+++ b/content/documentation/flinkml-stable/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/flinkml-stable/" title="ML 2.3 (stable)">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/documentation/index.html b/content/documentation/index.html
index 601a41a..5e94ab9 100644
--- a/content/documentation/index.html
+++ b/content/documentation/index.html
@@ -26,7 +26,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/documentation/" title="Documentation">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/documentation/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -564,7 +564,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/downloads/index.html b/content/downloads/index.html
index 7b0df12..23eb3eb 100644
--- a/content/downloads/index.html
+++ b/content/downloads/index.html
@@ -38,7 +38,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/downloads/" title="Downloads">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1333,7 +1333,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/en.search-data.min.445510d8c7bbe567b4577c76140f5a502c5d27c1a45b675a9386a83e87ff55fe.js b/content/en.search-data.min.2de190ac736d5a1a2e24f419dcb87d9de1f5fe40b85cd4d4b6201e4fddaff67a.js
similarity index 99%
rename from content/en.search-data.min.445510d8c7bbe567b4577c76140f5a502c5d27c1a45b675a9386a83e87ff55fe.js
rename to content/en.search-data.min.2de190ac736d5a1a2e24f419dcb87d9de1f5fe40b85cd4d4b6201e4fddaff67a.js
index 2d424a1..55df791 100644
--- a/content/en.search-data.min.445510d8c7bbe567b4577c76140f5a502c5d27c1a45b675a9386a83e87ff55fe.js
+++ b/content/en.search-data.min.2de190ac736d5a1a2e24f419dcb87d9de1f5fe40b85cd4d4b6201e4fddaff67a.js
@@ -7,7 +7,7 @@
 Apache Flink excels at processing unbounded and bounded data sets. Precise control of time and state enable Flink&rsquo;s runtime to run any kind of application on unbounded streams. Bounded streams are internally processed by algorithms and data structures that are specifically designed for fixed sized data sets, yielding excellent performance.
 Convince yourself by exploring the use cases that have been built on top of Flink.
 Deploy Applications Anywhere # Apache Flink is a distributed system and requires compute resources in order to execute applications. Flink integrates with all common cluster resource managers such as Hadoop YARN and Kubernetes but can also be setup to run as a stand-alone cluster.
-Flink is designed to work well each of the previously listed resource managers. This is achieved by resource-manager-specific deployment modes that allow Flink to interact with each resource manager in its idiomatic way.
+Flink is designed to work well with each of the previously listed resource managers. This is achieved by resource-manager-specific deployment modes that allow Flink to interact with each resource manager in its idiomatic way.
 When deploying a Flink application, Flink automatically identifies the required resources based on the application&rsquo;s configured parallelism and requests them from the resource manager. In case of a failure, Flink replaces the failed container by requesting new resources. All communication to submit or control an application happens via REST calls. This eases the integration of Flink in many environments.
 Run Applications at any Scale # Flink is designed to run stateful streaming applications at any scale. Applications are parallelized into possibly thousands of tasks that are distributed and concurrently executed in a cluster. Therefore, an application can leverage virtually unlimited amounts of CPUs, main memory, disk and network IO. Moreover, Flink easily maintains very large application state. Its asynchronous and incremental checkpointing algorithm ensures minimal impact on processing latencies while guaranteeing exactly-once state consistency.
 Users reported impressive scalability numbers for Flink applications running in their production environments, such as
@@ -47,14 +47,14 @@
 Event-driven Applications Data Analytics Applications Data Pipeline Applications Event-driven Applications # What are event-driven applications? # An event-driven application is a stateful application that ingest events from one or more event streams and reacts to incoming events by triggering computations, state updates, or external actions.
 Event-driven applications are an evolution of the traditional application design with separated compute and data storage tiers. In this architecture, applications read data from and persist data to a remote transactional database.
 In contrast, event-driven applications are based on stateful stream processing applications. In this design, data and computation are co-located, which yields local (in-memory or disk) data access. Fault-tolerance is achieved by periodically writing checkpoints to a remote persistent storage. The figure below depicts the difference between the traditional application architecture and event-driven applications.
-What are the advantages of event-driven applications? # Instead of querying a remote database, event-driven applications access their data locally which yields better performance, both in terms of throughput and latency. The periodic checkpoints to a remote persistent storage can be asynchronously and incrementally done. Hence, the impact of checkpointing on the regular event processing is very small. However, the event-driven application design provides more benefits than just local data access. In the tiered architecture, it is common that multiple applications share the same database. Hence, any change of the database, such as changing the data layout due to an application update or scaling the service, needs to be coordinated. Since each event-driven application is responsible for its own data, changes to the data representation or scaling the application requires less coordination.
+What are the advantages of event-driven applications? # Instead of querying a remote database, event-driven applications access their data locally which yields better performance, both in terms of throughput and latency. The periodic checkpoints to a remote persistent storage can be asynchronous and incremental. Hence, the impact of checkpointing on the regular event processing is very small. However, the event-driven application design provides more benefits than just local data access. In the tiered architecture, it is common that multiple applications share the same database. Hence, any change of the database, such as changing the data layout due to an application update or scaling the service, needs to be coordinated. Since each event-driven application is responsible for its own data, changes to the data representation or scaling the application requires less coordination.
 How does Flink support event-driven applications? # The limits of event-driven applications are defined by how well a stream processor can handle time and state. Many of Flink&rsquo;s outstanding features are centered around these concepts. Flink provides a rich set of state primitives that can manage very large data volumes (up to several terabytes) with exactly-once consistency guarantees. Moreover, Flink&rsquo;s support for event-time, highly customizable window logic, and fine-grained control of time as provided by the ProcessFunction enable the implementation of advanced business logic. Moreover, Flink features a library for Complex Event Processing (CEP) to detect patterns in data streams.
-However, Flink&rsquo;s outstanding feature for event-driven applications is savepoint. A savepoint is a consistent state image that can be used as a starting point for compatible applications. Given a savepoint, an application can be updated or adapt its scale, or multiple versions of an application can be started for A/B testing.
+However, Flink&rsquo;s outstanding feature for event-driven applications is its support for savepoints. A savepoint is a consistent state image that can be used as a starting point for compatible applications. Given a savepoint, an application can be updated or adapt its scale, or multiple versions of an application can be started for A/B testing.
 What are typical event-driven applications? # Fraud detection Anomaly detection Rule-based alerting Business process monitoring Web application (social network) Data Analytics Applications # What are data analytics applications? # Analytical jobs extract information and insight from raw data. Traditionally, analytics are performed as batch queries or applications on bounded data sets of recorded events. In order to incorporate the latest data into the result of the analysis, it has to be added to the analyzed data set and the query or application is rerun. The results are written to a storage system or emitted as reports.
-With a sophisticated stream processing engine, analytics can also be performed in a real-time fashion. Instead of reading finite data sets, streaming queries or applications ingest real-time event streams and continuously produce and update results as events are consumed. The results are either written to an external database or maintained as internal state. Dashboard application can read the latest results from the external database or directly query the internal state of the application.
+With a sophisticated stream processing engine, analytics can also be performed in a real-time fashion. Instead of reading finite data sets, streaming queries or applications ingest real-time event streams and continuously produce and update results as events are consumed. The results are either written to an external database or maintained as internal state. A dashboard application can read the latest results from the external database or directly query the internal state of the application.
 Apache Flink supports streaming as well as batch analytical applications as shown in the figure below.
 What are the advantages of streaming analytics applications? # The advantages of continuous streaming analytics compared to batch analytics are not limited to a much lower latency from events to insight due to elimination of periodic import and query execution. In contrast to batch queries, streaming queries do not have to deal with artificial boundaries in the input data which are caused by periodic imports and the bounded nature of the input.
-Another aspect is a simpler application architecture. A batch analytics pipeline consist of several independent components to periodically schedule data ingestion and query execution. Reliably operating such a pipeline is non-trivial because failures of one component affect the following steps of the pipeline. In contrast, a streaming analytics application which runs on a sophisticated stream processor like Flink incorporates all steps from data ingestions to continuous result computation. Therefore, it can rely on the engine&rsquo;s failure recovery mechanism.
+Another aspect is a simpler application architecture. A batch analytics pipeline consists of several independent components to periodically schedule data ingestion and query execution. Reliably operating such a pipeline is non-trivial because failures of one component affect the following steps of the pipeline. In contrast, a streaming analytics application which runs on a sophisticated stream processor like Flink incorporates all steps from data ingestions to continuous result computation. Therefore, it can rely on the engine&rsquo;s failure recovery mechanism.
 How does Flink support data analytics applications? # Flink provides very good support for continuous streaming as well as batch analytics. Specifically, it features an ANSI-compliant SQL interface with unified semantics for batch and streaming queries. SQL queries compute the same result regardless whether they are run on a static data set of recorded events or on a real-time event stream. Rich support for user-defined functions ensures that custom code can be executed in SQL queries. If even more custom logic is required, Flink&rsquo;s DataStream API or DataSet API provide more low-level control.
 What are typical data analytics applications? # Quality monitoring of Telco networks Analysis of product updates &amp; experiment evaluation in mobile applications Ad-hoc analysis of live data in consumer technology Large-scale graph analysis Data Pipeline Applications # What are data pipelines? # Extract-transform-load (ETL) is a common approach to convert and move data between storage systems. Often ETL jobs are periodically triggered to copy data from transactional database systems to an analytical database or a data warehouse.
 Data pipelines serve a similar purpose as ETL jobs. They transform and enrich data and can move it from one storage system to another. However, they operate in a continuous streaming mode instead of being periodically triggered. Hence, they are able to read records from sources that continuously produce data and move it with low latency to their destination. For example a data pipeline might monitor a file system directory for new files and write their data into an event log. Another application might materialize an event stream to a database or incrementally build and refine a search index.
diff --git a/content/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js b/content/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js
similarity index 89%
rename from content/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js
rename to content/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js
index 803f570..0c85500 100644
--- a/content/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js
+++ b/content/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js
@@ -1 +1 @@
-"use strict";(function(){const e=document.querySelector("#book-search-input"),t=document.querySelector("#book-search-results");if(!e)return;e.addEventListener("focus",n),e.addEventListener("keyup",s),document.addEventListener("keypress",i);function i(t){if(e===document.activeElement)return;const n=String.fromCharCode(t.charCode);if(!a(n))return;e.focus(),t.preventDefault()}function a(t){const n=e.getAttribute("data-hotkeys")||"";return n.indexOf(t)>=0}function n(){e.removeEventListener("focus",n),e.required=!0,o("/flexsearch.min.js"),o("/en.search-data.min.445510d8c7bbe567b4577c76140f5a502c5d27c1a45b675a9386a83e87ff55fe.js",function(){e.required=!1,s()})}function s(){for(;t.firstChild;)t.removeChild(t.firstChild);if(!e.value)return;const n=window.bookSearchIndex.search(e.value,10);n.forEach(function(e){const n=r("<li><a href></a><small></small></li>"),s=n.querySelector("a"),o=n.querySelector("small");s.href=e.href,s.textContent=e.title,o.textContent=e.section,t.appendChild(n)})}function o(e,t){const n=document.createElement("script");n.defer=!0,n.async=!1,n.src=e,n.onload=t,document.head.appendChild(n)}function r(e){const t=document.createElement("div");return t.innerHTML=e,t.firstChild}})()
\ No newline at end of file
+"use strict";(function(){const e=document.querySelector("#book-search-input"),t=document.querySelector("#book-search-results");if(!e)return;e.addEventListener("focus",n),e.addEventListener("keyup",s),document.addEventListener("keypress",i);function i(t){if(e===document.activeElement)return;const n=String.fromCharCode(t.charCode);if(!a(n))return;e.focus(),t.preventDefault()}function a(t){const n=e.getAttribute("data-hotkeys")||"";return n.indexOf(t)>=0}function n(){e.removeEventListener("focus",n),e.required=!0,o("/flexsearch.min.js"),o("/en.search-data.min.2de190ac736d5a1a2e24f419dcb87d9de1f5fe40b85cd4d4b6201e4fddaff67a.js",function(){e.required=!1,s()})}function s(){for(;t.firstChild;)t.removeChild(t.firstChild);if(!e.value)return;const n=window.bookSearchIndex.search(e.value,10);n.forEach(function(e){const n=r("<li><a href></a><small></small></li>"),s=n.querySelector("a"),o=n.querySelector("small");s.href=e.href,s.textContent=e.title,o.textContent=e.section,t.appendChild(n)})}function o(e,t){const n=document.createElement("script");n.defer=!0,n.async=!1,n.src=e,n.onload=t,document.head.appendChild(n)}function r(e){const t=document.createElement("div");return t.innerHTML=e,t.firstChild}})()
\ No newline at end of file
diff --git a/content/flink-packages/index.html b/content/flink-packages/index.html
index 9f0688b..f0dd216 100644
--- a/content/flink-packages/index.html
+++ b/content/flink-packages/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/flink-packages/" title="flink-packages.org">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -579,7 +579,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/getting-started/index.html b/content/getting-started/index.html
index 8cc4f79..f7dc5da 100644
--- a/content/getting-started/index.html
+++ b/content/getting-started/index.html
@@ -26,7 +26,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/getting-started/" title="教程">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/getting-started/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -564,7 +564,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/getting-started/training-course/index.html b/content/getting-started/training-course/index.html
index 3353c6e..0af3f61 100644
--- a/content/getting-started/training-course/index.html
+++ b/content/getting-started/training-course/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/getting-started/training-course/" title="Training Course">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/getting-started/with-flink-cdc/index.html b/content/getting-started/with-flink-cdc/index.html
index 4cbb5b5..f54ed3a 100644
--- a/content/getting-started/with-flink-cdc/index.html
+++ b/content/getting-started/with-flink-cdc/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/getting-started/with-flink-cdc/" title="With Flink CDC">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/getting-started/with-flink-kubernetes-operator/index.html b/content/getting-started/with-flink-kubernetes-operator/index.html
index f8e3df5..90aee40 100644
--- a/content/getting-started/with-flink-kubernetes-operator/index.html
+++ b/content/getting-started/with-flink-kubernetes-operator/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/getting-started/with-flink-kubernetes-operator/" title="With Flink Kubernetes Operator">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/getting-started/with-flink-ml/index.html b/content/getting-started/with-flink-ml/index.html
index bd88359..fe7ad17 100644
--- a/content/getting-started/with-flink-ml/index.html
+++ b/content/getting-started/with-flink-ml/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/getting-started/with-flink-ml/" title="With Flink ML">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/getting-started/with-flink-stateful-functions/index.html b/content/getting-started/with-flink-stateful-functions/index.html
index db3ab63..5bb8922 100644
--- a/content/getting-started/with-flink-stateful-functions/index.html
+++ b/content/getting-started/with-flink-stateful-functions/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/getting-started/with-flink-stateful-functions/" title="With Flink Stateful Functions">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/getting-started/with-flink/index.html b/content/getting-started/with-flink/index.html
index 2c77885..d6b0424 100644
--- a/content/getting-started/with-flink/index.html
+++ b/content/getting-started/with-flink/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/getting-started/with-flink/" title="With Flink">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -583,7 +583,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/code-style-and-quality-common/index.html b/content/how-to-contribute/code-style-and-quality-common/index.html
index 2b3c24b..41ee8bf 100644
--- a/content/how-to-contribute/code-style-and-quality-common/index.html
+++ b/content/how-to-contribute/code-style-and-quality-common/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/code-style-and-quality-common/" title="Code Style and Quality Guide — Common Rules">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -472,33 +472,33 @@
   Code Style and Quality Guide — Common Rules
   <a class="anchor" href="#code-style-and-quality-guide--common-rules">#</a>
 </h1>
-<h4 id="preamblehahahugoshortcode54s0hbhb">
+<h4 id="preamblehahahugoshortcode53s0hbhb">
   <a href="/how-to-contribute/code-style-and-quality-preamble/">Preamble</a>
-  <a class="anchor" href="#preamblehahahugoshortcode54s0hbhb">#</a>
+  <a class="anchor" href="#preamblehahahugoshortcode53s0hbhb">#</a>
 </h4>
-<h4 id="pull-requests--changeshahahugoshortcode54s1hbhb">
+<h4 id="pull-requests--changeshahahugoshortcode53s1hbhb">
   <a href="/how-to-contribute/code-style-and-quality-pull-requests/">Pull Requests &amp; Changes</a>
-  <a class="anchor" href="#pull-requests--changeshahahugoshortcode54s1hbhb">#</a>
+  <a class="anchor" href="#pull-requests--changeshahahugoshortcode53s1hbhb">#</a>
 </h4>
-<h4 id="common-coding-guidehahahugoshortcode54s2hbhb">
+<h4 id="common-coding-guidehahahugoshortcode53s2hbhb">
   <a href="/how-to-contribute/code-style-and-quality-common/">Common Coding Guide</a>
-  <a class="anchor" href="#common-coding-guidehahahugoshortcode54s2hbhb">#</a>
+  <a class="anchor" href="#common-coding-guidehahahugoshortcode53s2hbhb">#</a>
 </h4>
-<h4 id="java-language-guidehahahugoshortcode54s3hbhb">
+<h4 id="java-language-guidehahahugoshortcode53s3hbhb">
   <a href="/how-to-contribute/code-style-and-quality-java/">Java Language Guide</a>
-  <a class="anchor" href="#java-language-guidehahahugoshortcode54s3hbhb">#</a>
+  <a class="anchor" href="#java-language-guidehahahugoshortcode53s3hbhb">#</a>
 </h4>
-<h4 id="scala-language-guidehahahugoshortcode54s4hbhb">
+<h4 id="scala-language-guidehahahugoshortcode53s4hbhb">
   <a href="/how-to-contribute/code-style-and-quality-scala/">Scala Language Guide</a>
-  <a class="anchor" href="#scala-language-guidehahahugoshortcode54s4hbhb">#</a>
+  <a class="anchor" href="#scala-language-guidehahahugoshortcode53s4hbhb">#</a>
 </h4>
-<h4 id="components-guidehahahugoshortcode54s5hbhb">
+<h4 id="components-guidehahahugoshortcode53s5hbhb">
   <a href="/how-to-contribute/code-style-and-quality-components/">Components Guide</a>
-  <a class="anchor" href="#components-guidehahahugoshortcode54s5hbhb">#</a>
+  <a class="anchor" href="#components-guidehahahugoshortcode53s5hbhb">#</a>
 </h4>
-<h4 id="formatting-guidehahahugoshortcode54s6hbhb">
+<h4 id="formatting-guidehahahugoshortcode53s6hbhb">
   <a href="/how-to-contribute/code-style-and-quality-formatting/">Formatting Guide</a>
-  <a class="anchor" href="#formatting-guidehahahugoshortcode54s6hbhb">#</a>
+  <a class="anchor" href="#formatting-guidehahahugoshortcode53s6hbhb">#</a>
 </h4>
 <hr>
 <h2 id="1-copyright">
@@ -989,7 +989,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/code-style-and-quality-components/index.html b/content/how-to-contribute/code-style-and-quality-components/index.html
index 24dbb20..ef714b3 100644
--- a/content/how-to-contribute/code-style-and-quality-components/index.html
+++ b/content/how-to-contribute/code-style-and-quality-components/index.html
@@ -32,7 +32,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/code-style-and-quality-components/" title="Apache Flink 代码样式和质量指南 — 组件">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -748,7 +748,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/code-style-and-quality-formatting/index.html b/content/how-to-contribute/code-style-and-quality-formatting/index.html
index c0b1077..f514791 100644
--- a/content/how-to-contribute/code-style-and-quality-formatting/index.html
+++ b/content/how-to-contribute/code-style-and-quality-formatting/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/code-style-and-quality-formatting/" title="Code Style and Quality Guide — Formatting Guide">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -754,7 +754,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/code-style-and-quality-java/index.html b/content/how-to-contribute/code-style-and-quality-java/index.html
index aed154c..32ac476 100644
--- a/content/how-to-contribute/code-style-and-quality-java/index.html
+++ b/content/how-to-contribute/code-style-and-quality-java/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/code-style-and-quality-java/" title="Code Style and Quality Guide — Java">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -745,7 +745,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/code-style-and-quality-preamble/index.html b/content/how-to-contribute/code-style-and-quality-preamble/index.html
index 2edc955..a82a09d 100644
--- a/content/how-to-contribute/code-style-and-quality-preamble/index.html
+++ b/content/how-to-contribute/code-style-and-quality-preamble/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/code-style-and-quality-preamble/" title="代码样式与质量指南">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -613,7 +613,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/code-style-and-quality-pull-requests/index.html b/content/how-to-contribute/code-style-and-quality-pull-requests/index.html
index f4fb9b3..63f97e9 100644
--- a/content/how-to-contribute/code-style-and-quality-pull-requests/index.html
+++ b/content/how-to-contribute/code-style-and-quality-pull-requests/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/code-style-and-quality-pull-requests/" title="Code Style and Quality Guide — Pull Requests & Changes">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -673,7 +673,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/code-style-and-quality-scala/index.html b/content/how-to-contribute/code-style-and-quality-scala/index.html
index 6c5d0e6..c97f094 100644
--- a/content/how-to-contribute/code-style-and-quality-scala/index.html
+++ b/content/how-to-contribute/code-style-and-quality-scala/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/code-style-and-quality-scala/" title="Code Style and Quality Guide — Scala">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -683,7 +683,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/contribute-code/index.html b/content/how-to-contribute/contribute-code/index.html
index 24360c4..2d67124 100644
--- a/content/how-to-contribute/contribute-code/index.html
+++ b/content/how-to-contribute/contribute-code/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/contribute-code/" title="贡献代码">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -793,7 +793,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/contribute-documentation/index.html b/content/how-to-contribute/contribute-documentation/index.html
index cece278..5c29641 100644
--- a/content/how-to-contribute/contribute-documentation/index.html
+++ b/content/how-to-contribute/contribute-documentation/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/contribute-documentation/" title="贡献文档">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -621,7 +621,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/documentation-style-guide/index.html b/content/how-to-contribute/documentation-style-guide/index.html
index 5463b9b..0dc6a71 100644
--- a/content/how-to-contribute/documentation-style-guide/index.html
+++ b/content/how-to-contribute/documentation-style-guide/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/documentation-style-guide/" title="文档样式指南">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1106,7 +1106,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/getting-help/index.html b/content/how-to-contribute/getting-help/index.html
index 5a47737..8ffbf02 100644
--- a/content/how-to-contribute/getting-help/index.html
+++ b/content/how-to-contribute/getting-help/index.html
@@ -32,7 +32,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/getting-help/" title="获取帮助">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -751,7 +751,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/improve-website/index.html b/content/how-to-contribute/improve-website/index.html
index 5899ab9..4c0a341 100644
--- a/content/how-to-contribute/improve-website/index.html
+++ b/content/how-to-contribute/improve-website/index.html
@@ -32,7 +32,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/improve-website/" title="贡献网站">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -656,7 +656,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/index.html b/content/how-to-contribute/index.html
index 33c744d..793a587 100644
--- a/content/how-to-contribute/index.html
+++ b/content/how-to-contribute/index.html
@@ -26,7 +26,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/" title="How to Contribute">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/how-to-contribute/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -564,7 +564,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/overview/index.html b/content/how-to-contribute/overview/index.html
index e858806..7322c59 100644
--- a/content/how-to-contribute/overview/index.html
+++ b/content/how-to-contribute/overview/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/overview/" title="如何参与贡献">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -685,7 +685,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/how-to-contribute/reviewing-prs/index.html b/content/how-to-contribute/reviewing-prs/index.html
index 72ffa40..6dc19a1 100644
--- a/content/how-to-contribute/reviewing-prs/index.html
+++ b/content/how-to-contribute/reviewing-prs/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/how-to-contribute/reviewing-prs/" title="审核 Pull Request">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -648,7 +648,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/index.html b/content/index.html
index e829358..84bc32a 100644
--- a/content/index.html
+++ b/content/index.html
@@ -26,7 +26,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/" title="Apache Flink Documentation">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -570,7 +570,7 @@
                 <div class="icon flink-event-driven-icon"></div>
                 <div class="heading">Event Driven Applications</div>
                 <div class="body">
-                    <p>An event-driven application is a stateful application that ingest events from one or more event streams and reacts to incoming events by triggering computations, state updates, or external actions.</p>
+                    <p>An event-driven application is a stateful application that ingests events from one or more event streams and reacts to incoming events by triggering computations, state updates, or external actions.</p>
                 </div>
             </div>
             <div class="panel">
@@ -741,7 +741,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/material/index.html b/content/material/index.html
index e938821..3dcc256 100644
--- a/content/material/index.html
+++ b/content/material/index.html
@@ -32,7 +32,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/material/" title="素材">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -849,7 +849,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/index.html b/content/posts/index.html
index 17e0973..a657026 100644
--- a/content/posts/index.html
+++ b/content/posts/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1794,7 +1794,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/10/index.html b/content/posts/page/10/index.html
index c8daaa6..132aaee 100644
--- a/content/posts/page/10/index.html
+++ b/content/posts/page/10/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1766,7 +1766,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/11/index.html b/content/posts/page/11/index.html
index 44e89b2..84a76bf 100644
--- a/content/posts/page/11/index.html
+++ b/content/posts/page/11/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1760,7 +1760,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/12/index.html b/content/posts/page/12/index.html
index 80d848b..3c4cc9a 100644
--- a/content/posts/page/12/index.html
+++ b/content/posts/page/12/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1755,7 +1755,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/13/index.html b/content/posts/page/13/index.html
index 157a7fb..0ccc2ba 100644
--- a/content/posts/page/13/index.html
+++ b/content/posts/page/13/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1755,7 +1755,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/14/index.html b/content/posts/page/14/index.html
index 12c50c2..4ff3db7 100644
--- a/content/posts/page/14/index.html
+++ b/content/posts/page/14/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1763,7 +1763,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/15/index.html b/content/posts/page/15/index.html
index 1b12a85..8f82e09 100644
--- a/content/posts/page/15/index.html
+++ b/content/posts/page/15/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1762,7 +1762,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/16/index.html b/content/posts/page/16/index.html
index 3b2864b..afad9e8 100644
--- a/content/posts/page/16/index.html
+++ b/content/posts/page/16/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1753,7 +1753,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/17/index.html b/content/posts/page/17/index.html
index c0e1165..614fb24 100644
--- a/content/posts/page/17/index.html
+++ b/content/posts/page/17/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1738,7 +1738,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/18/index.html b/content/posts/page/18/index.html
index b843d58..cd2ec66 100644
--- a/content/posts/page/18/index.html
+++ b/content/posts/page/18/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1764,7 +1764,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/19/index.html b/content/posts/page/19/index.html
index aa1a712..7dc85c1 100644
--- a/content/posts/page/19/index.html
+++ b/content/posts/page/19/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1727,7 +1727,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/2/index.html b/content/posts/page/2/index.html
index 1387949..8422429 100644
--- a/content/posts/page/2/index.html
+++ b/content/posts/page/2/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1751,7 +1751,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/20/index.html b/content/posts/page/20/index.html
index df68991..ace5eaa 100644
--- a/content/posts/page/20/index.html
+++ b/content/posts/page/20/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1711,7 +1711,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/21/index.html b/content/posts/page/21/index.html
index cf88c20..bf231e8 100644
--- a/content/posts/page/21/index.html
+++ b/content/posts/page/21/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1704,7 +1704,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/22/index.html b/content/posts/page/22/index.html
index 331a3a1..b5fd815 100644
--- a/content/posts/page/22/index.html
+++ b/content/posts/page/22/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1705,7 +1705,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/23/index.html b/content/posts/page/23/index.html
index a41c8fd..bea7ba0 100644
--- a/content/posts/page/23/index.html
+++ b/content/posts/page/23/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1706,7 +1706,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/24/index.html b/content/posts/page/24/index.html
index 6a80e06..529ad98 100644
--- a/content/posts/page/24/index.html
+++ b/content/posts/page/24/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1514,7 +1514,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/3/index.html b/content/posts/page/3/index.html
index a6480ee..1896234 100644
--- a/content/posts/page/3/index.html
+++ b/content/posts/page/3/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1768,7 +1768,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/4/index.html b/content/posts/page/4/index.html
index 4c5e5be..6d02bd5 100644
--- a/content/posts/page/4/index.html
+++ b/content/posts/page/4/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1762,7 +1762,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/5/index.html b/content/posts/page/5/index.html
index 05e70a1..873ecf8 100644
--- a/content/posts/page/5/index.html
+++ b/content/posts/page/5/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1766,7 +1766,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/6/index.html b/content/posts/page/6/index.html
index 7e02b28..142fe43 100644
--- a/content/posts/page/6/index.html
+++ b/content/posts/page/6/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1772,7 +1772,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/7/index.html b/content/posts/page/7/index.html
index 9c52a3f..2c4ecda 100644
--- a/content/posts/page/7/index.html
+++ b/content/posts/page/7/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1777,7 +1777,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/8/index.html b/content/posts/page/8/index.html
index d82db1a..ce254f0 100644
--- a/content/posts/page/8/index.html
+++ b/content/posts/page/8/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1772,7 +1772,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/posts/page/9/index.html b/content/posts/page/9/index.html
index e664d02..61d4f6e 100644
--- a/content/posts/page/9/index.html
+++ b/content/posts/page/9/index.html
@@ -24,7 +24,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/posts/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -1762,7 +1762,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/tags/index.html b/content/tags/index.html
index 62bf71b..b5174c5 100644
--- a/content/tags/index.html
+++ b/content/tags/index.html
@@ -26,7 +26,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/tags/" title="Tags">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/tags/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -544,7 +544,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink-ml/index.html b/content/what-is-flink-ml/index.html
index bce62c3..47cd581 100644
--- a/content/what-is-flink-ml/index.html
+++ b/content/what-is-flink-ml/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink-ml/" title="What is Flink ML?">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -579,7 +579,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink-table-store/index.html b/content/what-is-flink-table-store/index.html
index 03c871d..31baaea 100644
--- a/content/what-is-flink-table-store/index.html
+++ b/content/what-is-flink-table-store/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink-table-store/" title="What is Paimon(incubating) (formerly Flink Table Store)?">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -579,7 +579,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/community/index.html b/content/what-is-flink/community/index.html
index 9266b19..935c23a 100644
--- a/content/what-is-flink/community/index.html
+++ b/content/what-is-flink/community/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/community/" title="社区 & 项目信息">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -492,7 +492,7 @@
   How do I get help from Apache Flink?
   <a class="anchor" href="#how-do-i-get-help-from-apache-flink">#</a>
 </h2>
-<p>There are many ways to get help from the Apache Flink community. The <a href="#mailing-lists">mailing lists</a> are the primary place where all Flink committers are present. For user support and questions use the <em>user mailing list</em>. You can also join the community on <a href="#slack">Slack</a>. Some committers are also monitoring <a href="#stack-overflow">Stack Overflow</a>. Please remember to tag your questions with the <em><a href="http://stackoverflow.com/questions/tagged/apache-flink">apache-flink</a></em> tag. Bugs and feature requests can either be discussed on the <em>dev mailing list</em> or on <a href="#issue-tracker">Jira</a>. Those interested in contributing to Flink should check out the <a href="/how-to-contribute/">contribution guide</a>.</p>
+<p>There are many ways to get help from the Apache Flink community. The <a href="#mailing-lists">mailing lists</a> are the primary place where all Flink committers are present. For user support and questions use the <em>user mailing list</em>. You can also join the community on <a href="#slack">Slack</a>. Some committers are also monitoring <a href="#stack-overflow">Stack Overflow</a>. Please remember to tag your questions with the <em><a href="http://stackoverflow.com/questions/tagged/apache-flink">apache-flink</a></em> tag. Bugs and feature requests can either be discussed on the <em>dev mailing list</em> or on <a href="#issue-tracker">Jira</a>. Those interested in contributing to Flink should check out the <a href="/how-to-contribute/overview/">contribution guide</a>.</p>
 <h2 id="mailing-lists">
   Mailing Lists
   <a class="anchor" href="#mailing-lists">#</a>
@@ -1386,7 +1386,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/flink-applications/index.html b/content/what-is-flink/flink-applications/index.html
index 510ec83..e5a0b77 100644
--- a/content/what-is-flink/flink-applications/index.html
+++ b/content/what-is-flink/flink-applications/index.html
@@ -32,7 +32,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/flink-applications/" title="应用">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -793,7 +793,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/flink-architecture/index.html b/content/what-is-flink/flink-architecture/index.html
index 620a19e..b8de802 100644
--- a/content/what-is-flink/flink-architecture/index.html
+++ b/content/what-is-flink/flink-architecture/index.html
@@ -32,7 +32,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/flink-architecture/" title="架构">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -504,7 +504,7 @@
   <a class="anchor" href="#deploy-applications-anywhere">#</a>
 </h2>
 <p>Apache Flink is a distributed system and requires compute resources in order to execute applications. Flink integrates with all common cluster resource managers such as <a href="https://hadoop.apache.org/docs/stable/hadoop-yarn/hadoop-yarn-site/YARN.html">Hadoop YARN</a> and <a href="https://kubernetes.io/">Kubernetes</a> but can also be setup to run as a stand-alone cluster.</p>
-<p>Flink is designed to work well each of the previously listed resource managers. This is achieved by resource-manager-specific deployment modes that allow Flink to interact with each resource manager in its idiomatic way.</p>
+<p>Flink is designed to work well with each of the previously listed resource managers. This is achieved by resource-manager-specific deployment modes that allow Flink to interact with each resource manager in its idiomatic way.</p>
 <p>When deploying a Flink application, Flink automatically identifies the required resources based on the application&rsquo;s configured parallelism and requests them from the resource manager. In case of a failure, Flink replaces the failed container by requesting new resources. All communication to submit or control an application happens via REST calls. This eases the integration of Flink in many environments.</p>
 <!-- Add this section once library deployment mode is supported. -->
 <!--
@@ -648,7 +648,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/flink-operations/index.html b/content/what-is-flink/flink-operations/index.html
index b80e5fd..3f5577a 100644
--- a/content/what-is-flink/flink-operations/index.html
+++ b/content/what-is-flink/flink-operations/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/flink-operations/" title="运维">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -610,7 +610,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/index.html b/content/what-is-flink/index.html
index 4f465a1..d3ba38a 100644
--- a/content/what-is-flink/index.html
+++ b/content/what-is-flink/index.html
@@ -26,7 +26,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/" title="About">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <link rel="alternate" type="application/rss+xml" href="https://flink.apache.org/what-is-flink/index.xml" title="Apache Flink" />
 <!--
 Made with Book Theme
@@ -555,7 +555,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/powered-by/index.html b/content/what-is-flink/powered-by/index.html
index ac5b8d4..ceb6260 100644
--- a/content/what-is-flink/powered-by/index.html
+++ b/content/what-is-flink/powered-by/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/powered-by/" title="Flink 用户">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -1423,7 +1423,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/roadmap/index.html b/content/what-is-flink/roadmap/index.html
index d3b793a..948c38d 100644
--- a/content/what-is-flink/roadmap/index.html
+++ b/content/what-is-flink/roadmap/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/roadmap/" title="开发计划">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -802,7 +802,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/security/index.html b/content/what-is-flink/security/index.html
index d2a174f..b688929 100644
--- a/content/what-is-flink/security/index.html
+++ b/content/what-is-flink/security/index.html
@@ -30,7 +30,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/security/" title="Security">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -566,7 +566,7 @@
   I found a vulnerability in Flink, how do I report it?
   <a class="anchor" href="#i-found-a-vulnerability-in-flink-how-do-i-report-it">#</a>
 </h3>
-<p>Thanks a lot for looking into the security of Apache Flink! We appreciate reports improving the security of Flink. We accept vulnerability reports through the <a href="http://www.apache.org/security/">Apache Security Team</a>, via their private email address <a href="mailto:security@apache.org">security@apache.org</a>.</p>
+<p>Thanks a lot for looking into the security of Apache Flink! We appreciate reports improving the security of Flink. We accept vulnerability reports through the <a href="https://www.apache.org/security/">Apache Security Team</a>, via their private email address <a href="mailto:security@apache.org">security@apache.org</a>.</p>
 <p>If you want to discuss a potential security issue privately with the Flink PMC, you can reach us also via <a href="mailto:private@flink.apache.org">private@flink.apache.org</a>.</p>
 </article>
 
@@ -668,7 +668,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/special-thanks/index.html b/content/what-is-flink/special-thanks/index.html
index 027a534..096dbf9 100644
--- a/content/what-is-flink/special-thanks/index.html
+++ b/content/what-is-flink/special-thanks/index.html
@@ -40,7 +40,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/special-thanks/" title="特殊致谢">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -615,7 +615,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-flink/use-cases/index.html b/content/what-is-flink/use-cases/index.html
index a4726a6..e574b15 100644
--- a/content/what-is-flink/use-cases/index.html
+++ b/content/what-is-flink/use-cases/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-flink/use-cases/" title="应用场景">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -520,13 +520,13 @@
   What are the advantages of event-driven applications?
   <a class="anchor" href="#what-are-the-advantages-of-event-driven-applications">#</a>
 </h3>
-<p>Instead of querying a remote database, event-driven applications access their data locally which yields better performance, both in terms of throughput and latency. The periodic checkpoints to a remote persistent storage can be asynchronously and incrementally done. Hence, the impact of checkpointing on the regular event processing is very small. However, the event-driven application design provides more benefits than just local data access. In the tiered architecture, it is common that multiple applications share the same database. Hence, any change of the database, such as changing the data layout due to an application update or scaling the service, needs to be coordinated. Since each event-driven application is responsible for its own data, changes to the data representation or scaling the application requires less coordination.</p>
+<p>Instead of querying a remote database, event-driven applications access their data locally which yields better performance, both in terms of throughput and latency. The periodic checkpoints to a remote persistent storage can be asynchronous and incremental. Hence, the impact of checkpointing on the regular event processing is very small. However, the event-driven application design provides more benefits than just local data access. In the tiered architecture, it is common that multiple applications share the same database. Hence, any change of the database, such as changing the data layout due to an application update or scaling the service, needs to be coordinated. Since each event-driven application is responsible for its own data, changes to the data representation or scaling the application requires less coordination.</p>
 <h3 id="how-does-flink-support-event-driven-applications">
   How does Flink support event-driven applications?
   <a class="anchor" href="#how-does-flink-support-event-driven-applications">#</a>
 </h3>
 <p>The limits of event-driven applications are defined by how well a stream processor can handle time and state. Many of Flink&rsquo;s outstanding features are centered around these concepts. Flink provides a rich set of state primitives that can manage very large data volumes (up to several terabytes) with exactly-once consistency guarantees. Moreover, Flink&rsquo;s support for event-time, highly customizable window logic, and fine-grained control of time as provided by the <code>ProcessFunction</code> enable the implementation of advanced business logic. Moreover, Flink features a library for Complex Event Processing (CEP) to detect patterns in data streams.</p>
-<p>However, Flink&rsquo;s outstanding feature for event-driven applications is savepoint. A savepoint is a consistent state image that can be used as a starting point for compatible applications. Given a savepoint, an application can be updated or adapt its scale, or multiple versions of an application can be started for A/B testing.</p>
+<p>However, Flink&rsquo;s outstanding feature for event-driven applications is its support for savepoints. A savepoint is a consistent state image that can be used as a starting point for compatible applications. Given a savepoint, an application can be updated or adapt its scale, or multiple versions of an application can be started for A/B testing.</p>
 <h3 id="what-are-typical-event-driven-applications">
   What are typical event-driven applications?
   <a class="anchor" href="#what-are-typical-event-driven-applications">#</a>
@@ -547,7 +547,7 @@
   <a class="anchor" href="#what-are-data-analytics-applications">#</a>
 </h3>
 <p>Analytical jobs extract information and insight from raw data. Traditionally, analytics are performed as batch queries or applications on bounded data sets of recorded events. In order to incorporate the latest data into the result of the analysis, it has to be added to the analyzed data set and the query or application is rerun. The results are written to a storage system or emitted as reports.</p>
-<p>With a sophisticated stream processing engine, analytics can also be performed in a real-time fashion. Instead of reading finite data sets, streaming queries or applications ingest real-time event streams and continuously produce and update results as events are consumed. The results are either written to an external database or maintained as internal state. Dashboard application can read the latest results from the external database or directly query the internal state of the application.</p>
+<p>With a sophisticated stream processing engine, analytics can also be performed in a real-time fashion. Instead of reading finite data sets, streaming queries or applications ingest real-time event streams and continuously produce and update results as events are consumed. The results are either written to an external database or maintained as internal state. A dashboard application can read the latest results from the external database or directly query the internal state of the application.</p>
 <p>Apache Flink supports streaming as well as batch analytical applications as shown in the figure below.</p>
 <div>
   
@@ -563,7 +563,7 @@
   <a class="anchor" href="#what-are-the-advantages-of-streaming-analytics-applications">#</a>
 </h3>
 <p>The advantages of continuous streaming analytics compared to batch analytics are not limited to a much lower latency from events to insight due to elimination of periodic import and query execution. In contrast to batch queries, streaming queries do not have to deal with artificial boundaries in the input data which are caused by periodic imports and the bounded nature of the input.</p>
-<p>Another aspect is a simpler application architecture. A batch analytics pipeline consist of several independent components to periodically schedule data ingestion and query execution. Reliably operating such a pipeline is non-trivial because failures of one component affect the following steps of the pipeline. In contrast, a streaming analytics application which runs on a sophisticated stream processor like Flink incorporates all steps from data ingestions to continuous result computation. Therefore, it can rely on the engine&rsquo;s failure recovery mechanism.</p>
+<p>Another aspect is a simpler application architecture. A batch analytics pipeline consists of several independent components to periodically schedule data ingestion and query execution. Reliably operating such a pipeline is non-trivial because failures of one component affect the following steps of the pipeline. In contrast, a streaming analytics application which runs on a sophisticated stream processor like Flink incorporates all steps from data ingestions to continuous result computation. Therefore, it can rely on the engine&rsquo;s failure recovery mechanism.</p>
 <h3 id="how-does-flink-support-data-analytics-applications">
   How does Flink support data analytics applications?
   <a class="anchor" href="#how-does-flink-support-data-analytics-applications">#</a>
@@ -734,7 +734,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-stateful-functions/index.html b/content/what-is-stateful-functions/index.html
index c044ec8..c80013e 100644
--- a/content/what-is-stateful-functions/index.html
+++ b/content/what-is-stateful-functions/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-stateful-functions/" title="What is Stateful Functions?">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -579,7 +579,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/what-is-the-flink-kubernetes-operator/index.html b/content/what-is-the-flink-kubernetes-operator/index.html
index 0a82d82..766912a 100644
--- a/content/what-is-the-flink-kubernetes-operator/index.html
+++ b/content/what-is-the-flink-kubernetes-operator/index.html
@@ -28,7 +28,7 @@
 <link rel="alternate" hreflang="zh" href="https://flink.apache.org/zh/what-is-the-flink-kubernetes-operator/" title="What is the Flink Kubernetes Operator?">
 
 <link rel="stylesheet" href="/book.min.22eceb4d17baa9cdc0f57345edd6f215a40474022dfee39b63befb5fb3c596b5.css" integrity="sha256-IuzrTRe6qc3A9XNF7dbyFaQEdAIt/uObY777X7PFlrU=">
-<script defer src="/en.search.min.baf635ab0e127f80152dd1da4b524a5dea67cb9cc0feb21710b5188ada9c15c1.js" integrity="sha256-uvY1qw4Sf4AVLdHaS1JKXepny5zA/rIXELUYitqcFcE="></script>
+<script defer src="/en.search.min.2698f0d1b683dae4d6cb071668b310a55ebcf1c48d11410a015a51d90105b53e.js" integrity="sha256-Jpjw0baD2uTWywcWaLMQpV688cSNEUEKAVpR2QEFtT4="></script>
 <!--
 Made with Book Theme
 https://github.com/alex-shpak/hugo-book
@@ -579,7 +579,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/categories/index.html b/content/zh/categories/index.html
index 8029348..15aa24a 100644
--- a/content/zh/categories/index.html
+++ b/content/zh/categories/index.html
@@ -532,7 +532,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flink-cdc-master/index.html b/content/zh/documentation/flink-cdc-master/index.html
index e7a0964..126ea8f 100644
--- a/content/zh/documentation/flink-cdc-master/index.html
+++ b/content/zh/documentation/flink-cdc-master/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flink-cdc-stable/index.html b/content/zh/documentation/flink-cdc-stable/index.html
index 4683913..1a358b0 100644
--- a/content/zh/documentation/flink-cdc-stable/index.html
+++ b/content/zh/documentation/flink-cdc-stable/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flink-kubernetes-operator-master/index.html b/content/zh/documentation/flink-kubernetes-operator-master/index.html
index cc4a183..1420840 100644
--- a/content/zh/documentation/flink-kubernetes-operator-master/index.html
+++ b/content/zh/documentation/flink-kubernetes-operator-master/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flink-kubernetes-operator-stable/index.html b/content/zh/documentation/flink-kubernetes-operator-stable/index.html
index 43a3b4c..33db549 100644
--- a/content/zh/documentation/flink-kubernetes-operator-stable/index.html
+++ b/content/zh/documentation/flink-kubernetes-operator-stable/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flink-master/index.html b/content/zh/documentation/flink-master/index.html
index 888bec7..7dc6479 100644
--- a/content/zh/documentation/flink-master/index.html
+++ b/content/zh/documentation/flink-master/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flink-stable/index.html b/content/zh/documentation/flink-stable/index.html
index aca52b0..6d73487 100644
--- a/content/zh/documentation/flink-stable/index.html
+++ b/content/zh/documentation/flink-stable/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flink-stateful-functions-master/index.html b/content/zh/documentation/flink-stateful-functions-master/index.html
index 3d05ce1..ceb3f90 100644
--- a/content/zh/documentation/flink-stateful-functions-master/index.html
+++ b/content/zh/documentation/flink-stateful-functions-master/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flink-stateful-functions-stable/index.html b/content/zh/documentation/flink-stateful-functions-stable/index.html
index 492d14e..674db0c 100644
--- a/content/zh/documentation/flink-stateful-functions-stable/index.html
+++ b/content/zh/documentation/flink-stateful-functions-stable/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flinkml-master/index.html b/content/zh/documentation/flinkml-master/index.html
index 3426947..1d4ccf2 100644
--- a/content/zh/documentation/flinkml-master/index.html
+++ b/content/zh/documentation/flinkml-master/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/flinkml-stable/index.html b/content/zh/documentation/flinkml-stable/index.html
index 8342818..bf436ae 100644
--- a/content/zh/documentation/flinkml-stable/index.html
+++ b/content/zh/documentation/flinkml-stable/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/documentation/index.html b/content/zh/documentation/index.html
index 57bca49..f40885e 100644
--- a/content/zh/documentation/index.html
+++ b/content/zh/documentation/index.html
@@ -552,7 +552,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/downloads/index.html b/content/zh/downloads/index.html
index c59c4a3..3a3c1f0 100644
--- a/content/zh/downloads/index.html
+++ b/content/zh/downloads/index.html
@@ -1322,7 +1322,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/flink-packages/index.html b/content/zh/flink-packages/index.html
index a48ea81..93257af 100644
--- a/content/zh/flink-packages/index.html
+++ b/content/zh/flink-packages/index.html
@@ -569,7 +569,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/getting-started/index.html b/content/zh/getting-started/index.html
index fa95cf1..06ca508 100644
--- a/content/zh/getting-started/index.html
+++ b/content/zh/getting-started/index.html
@@ -552,7 +552,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/getting-started/training-course/index.html b/content/zh/getting-started/training-course/index.html
index 3140771..a7a94f7 100644
--- a/content/zh/getting-started/training-course/index.html
+++ b/content/zh/getting-started/training-course/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/getting-started/with-flink-cdc/index.html b/content/zh/getting-started/with-flink-cdc/index.html
index e3dd0d8..a26dfad 100644
--- a/content/zh/getting-started/with-flink-cdc/index.html
+++ b/content/zh/getting-started/with-flink-cdc/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/getting-started/with-flink-kubernetes-operator/index.html b/content/zh/getting-started/with-flink-kubernetes-operator/index.html
index 8125da2..dc5ccdc 100644
--- a/content/zh/getting-started/with-flink-kubernetes-operator/index.html
+++ b/content/zh/getting-started/with-flink-kubernetes-operator/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/getting-started/with-flink-ml/index.html b/content/zh/getting-started/with-flink-ml/index.html
index c89eec7..7be88e1 100644
--- a/content/zh/getting-started/with-flink-ml/index.html
+++ b/content/zh/getting-started/with-flink-ml/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/getting-started/with-flink-stateful-functions/index.html b/content/zh/getting-started/with-flink-stateful-functions/index.html
index 75d8c09..a4e3758 100644
--- a/content/zh/getting-started/with-flink-stateful-functions/index.html
+++ b/content/zh/getting-started/with-flink-stateful-functions/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/getting-started/with-flink/index.html b/content/zh/getting-started/with-flink/index.html
index 5cacf07..9502e73 100644
--- a/content/zh/getting-started/with-flink/index.html
+++ b/content/zh/getting-started/with-flink/index.html
@@ -573,7 +573,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/code-style-and-quality-common/index.html b/content/zh/how-to-contribute/code-style-and-quality-common/index.html
index 0ad493a..1683c44 100644
--- a/content/zh/how-to-contribute/code-style-and-quality-common/index.html
+++ b/content/zh/how-to-contribute/code-style-and-quality-common/index.html
@@ -460,33 +460,33 @@
   Code Style and Quality Guide — Common Rules
   <a class="anchor" href="#code-style-and-quality-guide--common-rules">#</a>
 </h1>
-<h4 id="序言hahahugoshortcode55s0hbhb">
+<h4 id="序言hahahugoshortcode57s0hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-preamble/">序言</a>
-  <a class="anchor" href="#%e5%ba%8f%e8%a8%80hahahugoshortcode55s0hbhb">#</a>
+  <a class="anchor" href="#%e5%ba%8f%e8%a8%80hahahugoshortcode57s0hbhb">#</a>
 </h4>
-<h4 id="pull-requests--changeshahahugoshortcode55s1hbhb">
+<h4 id="pull-requests--changeshahahugoshortcode57s1hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-pull-requests/">Pull Requests &amp; Changes</a>
-  <a class="anchor" href="#pull-requests--changeshahahugoshortcode55s1hbhb">#</a>
+  <a class="anchor" href="#pull-requests--changeshahahugoshortcode57s1hbhb">#</a>
 </h4>
-<h4 id="常用编码指南hahahugoshortcode55s2hbhb">
+<h4 id="常用编码指南hahahugoshortcode57s2hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-common/">常用编码指南</a>
-  <a class="anchor" href="#%e5%b8%b8%e7%94%a8%e7%bc%96%e7%a0%81%e6%8c%87%e5%8d%97hahahugoshortcode55s2hbhb">#</a>
+  <a class="anchor" href="#%e5%b8%b8%e7%94%a8%e7%bc%96%e7%a0%81%e6%8c%87%e5%8d%97hahahugoshortcode57s2hbhb">#</a>
 </h4>
-<h4 id="java-语言指南hahahugoshortcode55s3hbhb">
+<h4 id="java-语言指南hahahugoshortcode57s3hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-java/">Java 语言指南</a>
-  <a class="anchor" href="#java-%e8%af%ad%e8%a8%80%e6%8c%87%e5%8d%97hahahugoshortcode55s3hbhb">#</a>
+  <a class="anchor" href="#java-%e8%af%ad%e8%a8%80%e6%8c%87%e5%8d%97hahahugoshortcode57s3hbhb">#</a>
 </h4>
-<h4 id="scala-语言指南hahahugoshortcode55s4hbhb">
+<h4 id="scala-语言指南hahahugoshortcode57s4hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-scala/">Scala 语言指南</a>
-  <a class="anchor" href="#scala-%e8%af%ad%e8%a8%80%e6%8c%87%e5%8d%97hahahugoshortcode55s4hbhb">#</a>
+  <a class="anchor" href="#scala-%e8%af%ad%e8%a8%80%e6%8c%87%e5%8d%97hahahugoshortcode57s4hbhb">#</a>
 </h4>
-<h4 id="组件指南hahahugoshortcode55s5hbhb">
+<h4 id="组件指南hahahugoshortcode57s5hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-components/">组件指南</a>
-  <a class="anchor" href="#%e7%bb%84%e4%bb%b6%e6%8c%87%e5%8d%97hahahugoshortcode55s5hbhb">#</a>
+  <a class="anchor" href="#%e7%bb%84%e4%bb%b6%e6%8c%87%e5%8d%97hahahugoshortcode57s5hbhb">#</a>
 </h4>
-<h4 id="格式指南hahahugoshortcode55s6hbhb">
+<h4 id="格式指南hahahugoshortcode57s6hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-formatting/">格式指南</a>
-  <a class="anchor" href="#%e6%a0%bc%e5%bc%8f%e6%8c%87%e5%8d%97hahahugoshortcode55s6hbhb">#</a>
+  <a class="anchor" href="#%e6%a0%bc%e5%bc%8f%e6%8c%87%e5%8d%97hahahugoshortcode57s6hbhb">#</a>
 </h4>
 <hr>
 <h2 id="1-copyright">
@@ -979,7 +979,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/code-style-and-quality-components/index.html b/content/zh/how-to-contribute/code-style-and-quality-components/index.html
index dc1294f..5ece36f 100644
--- a/content/zh/how-to-contribute/code-style-and-quality-components/index.html
+++ b/content/zh/how-to-contribute/code-style-and-quality-components/index.html
@@ -466,33 +466,33 @@
   Apache Flink 代码样式和质量指南 — 组件
   <a class="anchor" href="#apache-flink-%e4%bb%a3%e7%a0%81%e6%a0%b7%e5%bc%8f%e5%92%8c%e8%b4%a8%e9%87%8f%e6%8c%87%e5%8d%97--%e7%bb%84%e4%bb%b6">#</a>
 </h1>
-<h4 id="序言hahahugoshortcode53s0hbhb">
+<h4 id="序言hahahugoshortcode58s0hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-preamble/">序言</a>
-  <a class="anchor" href="#%e5%ba%8f%e8%a8%80hahahugoshortcode53s0hbhb">#</a>
+  <a class="anchor" href="#%e5%ba%8f%e8%a8%80hahahugoshortcode58s0hbhb">#</a>
 </h4>
-<h4 id="pull-requests--changeshahahugoshortcode53s1hbhb">
+<h4 id="pull-requests--changeshahahugoshortcode58s1hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-pull-requests/">Pull Requests &amp; Changes</a>
-  <a class="anchor" href="#pull-requests--changeshahahugoshortcode53s1hbhb">#</a>
+  <a class="anchor" href="#pull-requests--changeshahahugoshortcode58s1hbhb">#</a>
 </h4>
-<h4 id="常用编码指南hahahugoshortcode53s2hbhb">
+<h4 id="常用编码指南hahahugoshortcode58s2hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-common/">常用编码指南</a>
-  <a class="anchor" href="#%e5%b8%b8%e7%94%a8%e7%bc%96%e7%a0%81%e6%8c%87%e5%8d%97hahahugoshortcode53s2hbhb">#</a>
+  <a class="anchor" href="#%e5%b8%b8%e7%94%a8%e7%bc%96%e7%a0%81%e6%8c%87%e5%8d%97hahahugoshortcode58s2hbhb">#</a>
 </h4>
-<h4 id="java-语言指南hahahugoshortcode53s3hbhb">
+<h4 id="java-语言指南hahahugoshortcode58s3hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-java/">Java 语言指南</a>
-  <a class="anchor" href="#java-%e8%af%ad%e8%a8%80%e6%8c%87%e5%8d%97hahahugoshortcode53s3hbhb">#</a>
+  <a class="anchor" href="#java-%e8%af%ad%e8%a8%80%e6%8c%87%e5%8d%97hahahugoshortcode58s3hbhb">#</a>
 </h4>
-<h4 id="scala-语言指南hahahugoshortcode53s4hbhb">
+<h4 id="scala-语言指南hahahugoshortcode58s4hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-scala/">Scala 语言指南</a>
-  <a class="anchor" href="#scala-%e8%af%ad%e8%a8%80%e6%8c%87%e5%8d%97hahahugoshortcode53s4hbhb">#</a>
+  <a class="anchor" href="#scala-%e8%af%ad%e8%a8%80%e6%8c%87%e5%8d%97hahahugoshortcode58s4hbhb">#</a>
 </h4>
-<h4 id="组件指南hahahugoshortcode53s5hbhb">
+<h4 id="组件指南hahahugoshortcode58s5hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-components/">组件指南</a>
-  <a class="anchor" href="#%e7%bb%84%e4%bb%b6%e6%8c%87%e5%8d%97hahahugoshortcode53s5hbhb">#</a>
+  <a class="anchor" href="#%e7%bb%84%e4%bb%b6%e6%8c%87%e5%8d%97hahahugoshortcode58s5hbhb">#</a>
 </h4>
-<h4 id="格式指南hahahugoshortcode53s6hbhb">
+<h4 id="格式指南hahahugoshortcode58s6hbhb">
   <a href="/zh/how-to-contribute/code-style-and-quality-formatting/">格式指南</a>
-  <a class="anchor" href="#%e6%a0%bc%e5%bc%8f%e6%8c%87%e5%8d%97hahahugoshortcode53s6hbhb">#</a>
+  <a class="anchor" href="#%e6%a0%bc%e5%bc%8f%e6%8c%87%e5%8d%97hahahugoshortcode58s6hbhb">#</a>
 </h4>
 <h2 id="组件特定指南">
   组件特定指南
@@ -733,7 +733,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/code-style-and-quality-formatting/index.html b/content/zh/how-to-contribute/code-style-and-quality-formatting/index.html
index 8c3eaf4..3bbbbee 100644
--- a/content/zh/how-to-contribute/code-style-and-quality-formatting/index.html
+++ b/content/zh/how-to-contribute/code-style-and-quality-formatting/index.html
@@ -744,7 +744,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/code-style-and-quality-java/index.html b/content/zh/how-to-contribute/code-style-and-quality-java/index.html
index f220fb7..7d0b237 100644
--- a/content/zh/how-to-contribute/code-style-and-quality-java/index.html
+++ b/content/zh/how-to-contribute/code-style-and-quality-java/index.html
@@ -735,7 +735,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/code-style-and-quality-preamble/index.html b/content/zh/how-to-contribute/code-style-and-quality-preamble/index.html
index f4b4c34..29c1406 100644
--- a/content/zh/how-to-contribute/code-style-and-quality-preamble/index.html
+++ b/content/zh/how-to-contribute/code-style-and-quality-preamble/index.html
@@ -613,7 +613,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/code-style-and-quality-pull-requests/index.html b/content/zh/how-to-contribute/code-style-and-quality-pull-requests/index.html
index 9963df5..be3d334 100644
--- a/content/zh/how-to-contribute/code-style-and-quality-pull-requests/index.html
+++ b/content/zh/how-to-contribute/code-style-and-quality-pull-requests/index.html
@@ -665,7 +665,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/code-style-and-quality-scala/index.html b/content/zh/how-to-contribute/code-style-and-quality-scala/index.html
index f40cbec..034cac2 100644
--- a/content/zh/how-to-contribute/code-style-and-quality-scala/index.html
+++ b/content/zh/how-to-contribute/code-style-and-quality-scala/index.html
@@ -676,7 +676,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/contribute-code/index.html b/content/zh/how-to-contribute/contribute-code/index.html
index 2618ef5..77387d8 100644
--- a/content/zh/how-to-contribute/contribute-code/index.html
+++ b/content/zh/how-to-contribute/contribute-code/index.html
@@ -787,7 +787,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/contribute-documentation/index.html b/content/zh/how-to-contribute/contribute-documentation/index.html
index 7953085..875c695 100644
--- a/content/zh/how-to-contribute/contribute-documentation/index.html
+++ b/content/zh/how-to-contribute/contribute-documentation/index.html
@@ -627,7 +627,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/documentation-style-guide/index.html b/content/zh/how-to-contribute/documentation-style-guide/index.html
index 3c41bf8..ab489b2 100644
--- a/content/zh/how-to-contribute/documentation-style-guide/index.html
+++ b/content/zh/how-to-contribute/documentation-style-guide/index.html
@@ -986,7 +986,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/getting-help/index.html b/content/zh/how-to-contribute/getting-help/index.html
index a783e5b..ea446e1 100644
--- a/content/zh/how-to-contribute/getting-help/index.html
+++ b/content/zh/how-to-contribute/getting-help/index.html
@@ -733,7 +733,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/improve-website/index.html b/content/zh/how-to-contribute/improve-website/index.html
index 7772e01..8c6d4e7 100644
--- a/content/zh/how-to-contribute/improve-website/index.html
+++ b/content/zh/how-to-contribute/improve-website/index.html
@@ -656,7 +656,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/index.html b/content/zh/how-to-contribute/index.html
index 4472c98..96590f2 100644
--- a/content/zh/how-to-contribute/index.html
+++ b/content/zh/how-to-contribute/index.html
@@ -552,7 +552,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/overview/index.html b/content/zh/how-to-contribute/overview/index.html
index f7f8c61..5249bfb 100644
--- a/content/zh/how-to-contribute/overview/index.html
+++ b/content/zh/how-to-contribute/overview/index.html
@@ -681,7 +681,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/how-to-contribute/reviewing-prs/index.html b/content/zh/how-to-contribute/reviewing-prs/index.html
index b480cc6..4d9ecb1 100644
--- a/content/zh/how-to-contribute/reviewing-prs/index.html
+++ b/content/zh/how-to-contribute/reviewing-prs/index.html
@@ -650,7 +650,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/index.html b/content/zh/index.html
index 2bc41c9..af1718e 100644
--- a/content/zh/index.html
+++ b/content/zh/index.html
@@ -729,7 +729,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/material/index.html b/content/zh/material/index.html
index 0d694f4..aac397a 100644
--- a/content/zh/material/index.html
+++ b/content/zh/material/index.html
@@ -841,7 +841,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/tags/index.html b/content/zh/tags/index.html
index c2a8c82..95aa5b8 100644
--- a/content/zh/tags/index.html
+++ b/content/zh/tags/index.html
@@ -532,7 +532,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink-ml/index.html b/content/zh/what-is-flink-ml/index.html
index 6dca9f7..1768845 100644
--- a/content/zh/what-is-flink-ml/index.html
+++ b/content/zh/what-is-flink-ml/index.html
@@ -569,7 +569,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink-table-store/index.html b/content/zh/what-is-flink-table-store/index.html
index cca4423..3fb9bd3 100644
--- a/content/zh/what-is-flink-table-store/index.html
+++ b/content/zh/what-is-flink-table-store/index.html
@@ -569,7 +569,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/community/index.html b/content/zh/what-is-flink/community/index.html
index e18efb8..d4a9ea8 100644
--- a/content/zh/what-is-flink/community/index.html
+++ b/content/zh/what-is-flink/community/index.html
@@ -490,7 +490,7 @@
   如何从 Apache Flink 获得帮助？
   <a class="anchor" href="#%e5%a6%82%e4%bd%95%e4%bb%8e-apache-flink-%e8%8e%b7%e5%be%97%e5%b8%ae%e5%8a%a9">#</a>
 </h2>
-<p>我们可以通过多种方式从 Apache Flink 社区获得帮助。Flink committer 主要活跃在 <a href="#mailing-lists">邮件列表</a>。对于用户支持和问题咨询，则可以通过 用户邮件列表 获得帮助。你还可以加入社区专属的 <a href="#slack">Slack</a>。有些 Committer 同时会关注 <a href="#stack-overflow">Stack Overflow</a>。请在提问的时候记得添加 <em><a href="http://stackoverflow.com/questions/tagged/apache-flink">apache-flink</a></em> 的标签。问题反馈以及新特性的讨论则可以在 开发邮件列表 或者 <a href="#issue-%e8%bf%bd%e8%b8%aa">Jira</a> 上进行讨论。有兴趣对 Flink 进行贡献的人请查阅 <a href="/zh/how-to-contribute/">贡献指南</a>.</p>
+<p>我们可以通过多种方式从 Apache Flink 社区获得帮助。Flink committer 主要活跃在 <a href="#mailing-lists">邮件列表</a>。对于用户支持和问题咨询，则可以通过 用户邮件列表 获得帮助。你还可以加入社区专属的 <a href="#slack">Slack</a>。有些 Committer 同时会关注 <a href="#stack-overflow">Stack Overflow</a>。请在提问的时候记得添加 <em><a href="http://stackoverflow.com/questions/tagged/apache-flink">apache-flink</a></em> 的标签。问题反馈以及新特性的讨论则可以在 开发邮件列表 或者 <a href="#issue-%e8%bf%bd%e8%b8%aa">Jira</a> 上进行讨论。有兴趣对 Flink 进行贡献的人请查阅 <a href="/zh/how-to-contribute/overview/">贡献指南</a>.</p>
 <h2 id="邮件列表">
   邮件列表
   <a class="anchor" href="#%e9%82%ae%e4%bb%b6%e5%88%97%e8%a1%a8">#</a>
@@ -1384,7 +1384,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/flink-applications/index.html b/content/zh/what-is-flink/flink-applications/index.html
index b10d9b1..6e54f15 100644
--- a/content/zh/what-is-flink/flink-applications/index.html
+++ b/content/zh/what-is-flink/flink-applications/index.html
@@ -791,7 +791,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/flink-architecture/index.html b/content/zh/what-is-flink/flink-architecture/index.html
index 99b8ebc..0f1bac1 100644
--- a/content/zh/what-is-flink/flink-architecture/index.html
+++ b/content/zh/what-is-flink/flink-architecture/index.html
@@ -661,7 +661,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/flink-operations/index.html b/content/zh/what-is-flink/flink-operations/index.html
index 624c4d5..9016736 100644
--- a/content/zh/what-is-flink/flink-operations/index.html
+++ b/content/zh/what-is-flink/flink-operations/index.html
@@ -610,7 +610,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/index.html b/content/zh/what-is-flink/index.html
index 24df70e..6eae8eb 100644
--- a/content/zh/what-is-flink/index.html
+++ b/content/zh/what-is-flink/index.html
@@ -543,7 +543,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/powered-by/index.html b/content/zh/what-is-flink/powered-by/index.html
index b91fb62..985ae4f 100644
--- a/content/zh/what-is-flink/powered-by/index.html
+++ b/content/zh/what-is-flink/powered-by/index.html
@@ -1417,7 +1417,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/roadmap/index.html b/content/zh/what-is-flink/roadmap/index.html
index d7d9569..c4175db 100644
--- a/content/zh/what-is-flink/roadmap/index.html
+++ b/content/zh/what-is-flink/roadmap/index.html
@@ -806,7 +806,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/security/index.html b/content/zh/what-is-flink/security/index.html
index 8d2ba26..66138c4 100644
--- a/content/zh/what-is-flink/security/index.html
+++ b/content/zh/what-is-flink/security/index.html
@@ -554,7 +554,7 @@
   I found a vulnerability in Flink, how do I report it?
   <a class="anchor" href="#i-found-a-vulnerability-in-flink-how-do-i-report-it">#</a>
 </h3>
-<p>Thanks a lot for looking into the security of Apache Flink! We appreciate reports improving the security of Flink. We accept vulnerability reports through the <a href="http://www.apache.org/security/">Apache Security Team</a>, via their private email address <a href="mailto:security@apache.org">security@apache.org</a>.</p>
+<p>Thanks a lot for looking into the security of Apache Flink! We appreciate reports improving the security of Flink. We accept vulnerability reports through the <a href="https://www.apache.org/security/">Apache Security Team</a>, via their private email address <a href="mailto:security@apache.org">security@apache.org</a>.</p>
 <p>If you want to discuss a potential security issue privately with the Flink PMC, you can reach us also via <a href="mailto:private@flink.apache.org">private@flink.apache.org</a>.</p>
 </article>
 
@@ -658,7 +658,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/special-thanks/index.html b/content/zh/what-is-flink/special-thanks/index.html
index 7d7356e..9d053cd 100644
--- a/content/zh/what-is-flink/special-thanks/index.html
+++ b/content/zh/what-is-flink/special-thanks/index.html
@@ -604,7 +604,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-flink/use-cases/index.html b/content/zh/what-is-flink/use-cases/index.html
index dd2b37d..d7f3798 100644
--- a/content/zh/what-is-flink/use-cases/index.html
+++ b/content/zh/what-is-flink/use-cases/index.html
@@ -746,7 +746,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-stateful-functions/index.html b/content/zh/what-is-stateful-functions/index.html
index d0e5637..1faac9b 100644
--- a/content/zh/what-is-stateful-functions/index.html
+++ b/content/zh/what-is-stateful-functions/index.html
@@ -569,7 +569,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>
diff --git a/content/zh/what-is-the-flink-kubernetes-operator/index.html b/content/zh/what-is-the-flink-kubernetes-operator/index.html
index edd6256..83ae913 100644
--- a/content/zh/what-is-the-flink-kubernetes-operator/index.html
+++ b/content/zh/what-is-the-flink-kubernetes-operator/index.html
@@ -569,7 +569,7 @@
       <div class="panel">
         <ul>
           <li>
-            <a href="https://www.apache.org/security/">Security</a>
+            <a href="/zh/what-is-flink/security">Security</a-->
           </li>
           <li>
             <a href="https://www.apache.org/foundation/sponsorship.html">Donate</a>