how-do-durable-queues-and-topics-work.html - activemq-web - Git at Google

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <!--

     Licensed to the Apache Software Foundation (ASF) under one or more
     contributor license agreements.  See the NOTICE file distributed with
     this work for additional information regarding copyright ownership.
     The ASF licenses this file to You under the Apache License, Version 2.0
     (the "License"); you may not use this file except in compliance with
     the License.  You may obtain a copy of the License at

        http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
 -->
 <html>
 <head>
     <link href="http://activemq.apache.org/styles/site.css" rel="stylesheet" type="text/css"/>
     <link href="http://activemq.apache.org/styles/type-settings.css" rel="stylesheet" type="text/css"/>
     <script src="http://activemq.apache.org/styles/prototype.js" type="text/javascript"></script>
     <script src="http://activemq.apache.org/styles/rico.js" type="text/javascript"></script>
     <script src="http://activemq.apache.org/styles/site.js" type="text/javascript"></script>
     <style type="text/css">
       .maincontent { overflow:hidden; }
     </style>
     <!--[if IE]>
     <style type="text/css">
       .maincontent { width:100%; }
     </style>
     <![endif]-->


     <title>
     Apache ActiveMQ &#8482; -- How do durable queues and topics work
     </title>
 </head>
 <body>
 <div class="white_box">
 <div class="header">
   <div class="header_l">
     <div class="header_r">
     </div>
   </div>
 </div>
 <div class="content">
   <div class="content_l">
     <div class="content_r">
       <div>

 <!-- Banner -->
 <div id="asf_logo">
 	<div id="activemq_logo">
      <a shape="rect" style="float:left; width:280px;display:block;text-indent:-5000px;text-decoration:none;line-height:60px; margin-top:10px; margin-left:100px;" href="http://activemq.apache.org" title="The most popular and powerful open source Message Broker">ActiveMQ</a>
             <a shape="rect" style="float:right; width:210px;display:block;text-indent:-5000px;text-decoration:none;line-height:60px; margin-top:15px; margin-right:10px;" href="http://www.apache.org" title="The Apache Software Foundation">ASF</a>
 	</div>
 </div>

         <div class="top_red_bar">
           <div id="site-breadcrumbs">
 <a href="community.html">Community</a>&nbsp;&gt;&nbsp;<a href="faq.html">FAQ</a>&nbsp;&gt;&nbsp;<a href="jms.html">JMS</a>&nbsp;&gt;&nbsp;<a href="how-do-durable-queues-and-topics-work.html">How do durable queues and topics work</a>
           </div>
           <div id="site-quicklinks">
 <p><a shape="rect" href="download.html">Download</a> | <a shape="rect" class="external-link" href="http://activemq.apache.org/maven/apidocs/index.html">JavaDocs</a> <a shape="rect" href="javadocs.html">More...</a> | <a shape="rect" href="source.html">Source</a> | <a shape="rect" href="discussion-forums.html">Forums</a> | <a shape="rect" href="support.html">Support</a></p>
           </div>
         </div>

   <table border="0">
   <tbody>
         <tr>
         <td valign="top" width="100%">
 <div class="wiki-content maincontent"><p>Durable queues keep messages around persistently for any suitable consumer to consume them. Durable queues do not need to concern themselves with which consumer is going to consume the messages at some point in the future. There is just one copy of a message that any consumer in the future can consume.</p>

 <p>Durable topics however are different as they must logically persist an instance of each suitable message for every durable consumer - since each durable consumer gets their own copy of the message.</p>

 <p>For example imagine a durable subscriber S starts up subscribing to topic T at time D1. Some publisher sends messages M1, M2, M3 to the topic and S will receive each of these messages. Then S is stopped and the publisher continues to send M4, M5.</p>

 <p>When S restarts at D2, the publisher sends M6 and M7. Now S will receive M4, M5 followed by M6 and M7 and all future messages. i.e. S will receive all messages from M1..M7.</p>

 <p>This is the difference between durable and non-durable consuming. If S were a non-durable consumer then it would only have received M1, M2, M3 and M6, M7 - not M4 and M5. i.e. because the subscription is durable, S will receive every message sent to T whether the subscriber is running or not. For non-durable topics, only messages delivered to the topic T when S is running are delivered.</p>

 <p>So for durable topic subscription, the JMS provider needs to be able to identify S when it shuts down and later on in the future reconnects, so it can know what messages to send to it while it was not running. JMS specification dictates that the identification of S is done by a combination of the clientID and the durable subscriber name. This is so that the JMS connection S uses can have many different durable subscriptions on different topics or on the same topic with different selectors - yet the JMS provider can know which message for which subscription to keep around for it.</p>

 <p>So setting the clientID on a JMS connection is vital (along with using a sensible durable consumer name) for durable topic subscription. Its not an issue for other <a shape="rect" href="qos.html">QoS</a></p></div>
         </td>
         <td valign="top">
           <div class="navigation">
             <div class="navigation_top">
               <div class="navigation_bottom">
 <h3 id="Navigation-Overviewhttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35985"><a shape="rect" href="overview.html">Overview</a></h3><ul class="alternate"><li><a shape="rect" href="index.html">Index</a></li><li><a shape="rect" href="news.html">News</a></li><li><a shape="rect" href="new-features.html">New Features</a></li><li><a shape="rect" href="getting-started.html">Getting Started</a></li><li><a shape="rect" href="faq.html">FAQ</a></li><li><a shape="rect" href="articles.html">Articles</a></li><li><a shape="rect" href="books.html">Books</a></li><li><a shape="rect" href="download.html">Download</a></li><li><a shape="rect" class="external-link" href="http://www.apache.org/licenses/">License</a></li></ul><h3 id="Navigation-Search">Search</h3><div>
 <form enctype="application/x-www-form-urlencoded" method="get" action="http://www.google.com/search" style="font-size: 10px;">
 <input type="hidden" name="ie" value="UTF-8">
 <input type="hidden" name="oe" value="UTF-8">
   <input maxlength="255" type="text" name="q" size="15" value="value"><br clear="none">
   <input type="submit" name="btnG" value="Search">
   <input type="hidden" name="domains" value="activemq.apache.org">
   <input type="hidden" name="sitesearch" value="activemq.apache.org">
 </form>
 </div>
 <h3 id="Navigation-SubProjects">Sub Projects</h3><ul class="alternate"><li><a shape="rect" class="external-link" href="http://activemq.apache.org/artemis/">Artemis</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/apollo" title="ActiveMQ Apollo">Apollo</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/cms/">CMS</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/nms/" title="NMS is the .Net Messaging API">NMS</a></li></ul><h3 id="Navigation-Communityhttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=36130"><a shape="rect" href="community.html">Community</a></h3><ul class="alternate"><li><a shape="rect" href="support.html">Support</a></li><li><a shape="rect" href="contributing.html">Contributing</a></li><li><a shape="rect" href="discussion-forums.html">Discussion Forums</a></li><li><a shape="rect" href="mailing-lists.html">Mailing Lists</a></li><li><a shape="rect" href="irc.html">IRC</a></li><li><a shape="rect" class="external-link" href="http://javabot.evanchooly.com/logs/%23apache-activemq/today" rel="nofollow">IRC Log</a></li><li><a shape="rect" href="security-advisories.html">Security Advisories</a></li><li><a shape="rect" href="site.html">Site</a></li><li><a shape="rect" class="external-link" href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li><li><a shape="rect" href="projects-using-activemq.html">Projects Using ActiveMQ</a></li><li><a shape="rect" href="users.html">Users</a></li><li><a shape="rect" href="team.html">Team</a></li><li><a shape="rect" href="thanks.html">Thanks</a></li></ul><h3 id="Navigation-Featureshttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35883"><a shape="rect" href="features.html">Features</a></h3><ul class="alternate"><li><a shape="rect" href="advisory-message.html">Advisory Message</a></li><li><a shape="rect" href="clustering.html">Clustering</a></li><li><a shape="rect" href="cross-language-clients.html">Cross Language Clients</a></li><li><a shape="rect" href="enterprise-integration-patterns.html">Enterprise Integration Patterns</a></li><li><a shape="rect" href="jmx.html">JMX</a></li><li><a shape="rect" href="jms-to-jms-bridge.html">JMS to JMS Bridge</a></li><li><a shape="rect" href="masterslave.html">MasterSlave</a></li><li><a shape="rect" href="message-groups.html">Message Groups</a></li><li><a shape="rect" href="networks-of-brokers.html">Networks of Brokers</a></li><li><a shape="rect" href="performance.html">Performance</a></li><li><a shape="rect" href="persistence.html">Persistence</a></li><li><a shape="rect" href="security.html">Security</a></li><li><a shape="rect" href="virtual-destinations.html">Virtual Destinations</a></li><li><a shape="rect" href="visualisation.html">Visualisation</a></li><li><a shape="rect" href="features.html">More ...</a></li></ul><h3 id="Navigation-Connectivityhttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=36167"><a shape="rect" href="connectivity.html">Connectivity</a></h3><ul class="alternate"><li><a shape="rect" href="ajax.html">Ajax</a></li><li><a shape="rect" href="amqp.html">AMQP</a></li><li><a shape="rect" href="axis-and-cxf-support.html">Axis and CXF Support</a></li><li><a shape="rect" href="c-integration.html">C Integration</a></li><li><a shape="rect" href="activemq-c-clients.html">C++</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/nms/">C# and .Net Integration</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/cms/">CMS</a></li><li><a shape="rect" href="j2ee.html">J2EE</a></li><li><a shape="rect" href="jboss-integration.html">JBoss Integration</a></li><li><a shape="rect" class="external-link" href="http://docs.codehaus.org/display/JETTY/Integrating+with+ActiveMQ" rel="nofollow">Jetty</a></li><li><a shape="rect" href="jndi-support.html">JNDI Support</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/nms/" title="NMS is the .Net Messaging API">NMS</a></li><li><a shape="rect" href="rest.html">REST</a></li><li><a shape="rect" href="rss-and-atom.html">RSS and Atom</a></li><li><a shape="rect" href="spring-support.html">Spring Support</a></li><li><a shape="rect" href="stomp.html">Stomp</a></li><li><a shape="rect" href="tomcat.html">Tomcat</a></li><li><a shape="rect" href="unix-service.html">Unix Service</a></li><li><a shape="rect" href="weblogic-integration.html">WebLogic Integration</a></li><li><a shape="rect" href="xmpp.html">XMPP</a></li><li><a shape="rect" href="connectivity.html">More ...</a></li></ul><h3 id="Navigation-UsingActiveMQ5https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=71176"><a shape="rect" href="using-activemq-5.html">Using ActiveMQ 5</a></h3><ul class="alternate"><li><a shape="rect" href="version-5-getting-started.html">Getting Started</a></li><li><a shape="rect" href="version-5-initial-configuration.html">Initial Configuration</a></li><li><a shape="rect" href="version-5-run-broker.html">Running a Broker</a></li><li><a shape="rect" href="how-do-i-embed-a-broker-inside-a-connection.html">Embedded Brokers</a></li><li><a shape="rect" href="activemq-command-line-tools-reference.html">Command Line Tools</a></li><li><a shape="rect" href="configuring-version-5-transports.html">Configuring Transports</a></li><li><a shape="rect" href="version-5-examples.html">Examples</a></li><li><a shape="rect" href="version-5-web-samples.html">Web Samples</a></li><li><a shape="rect" href="how-can-i-monitor-activemq.html">Monitoring the Broker</a></li><li><a shape="rect" href="version-5-xml-configuration.html">Xml Configuration</a></li><li><a shape="rect" href="xml-reference.html">Xml Reference</a></li><li><a shape="rect" href="using-activemq-5.html">More ...</a></li></ul><h3 id="Navigation-Toolshttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35912"><a shape="rect" href="tools.html">Tools</a></h3><ul class="alternate"><li><a shape="rect" href="web-console.html">Web Console</a></li><li><a shape="rect" href="activemq-performance-module-users-manual.html">Maven2 Performance Plugin</a></li></ul><h3 id="Navigation-Supporthttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35919"><a shape="rect" href="support.html">Support</a></h3><ul class="alternate"><li><a shape="rect" class="external-link" href="http://issues.apache.org/jira/browse/AMQ">Issues</a></li><li><a shape="rect" class="external-link" href="http://issues.apache.org/activemq/browse/AMQ?report=com.atlassian.jira.plugin.system.project:roadmap-panel">Roadmap</a></li><li><a shape="rect" class="external-link" href="http://issues.apache.org/activemq/browse/AMQ?report=com.atlassian.jira.plugin.system.project:changelog-panel">Change log</a></li></ul><h3 id="Navigation-Developershttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35903"><a shape="rect" href="developers.html">Developers</a></h3><ul class="alternate"><li><a shape="rect" href="source.html">Source</a></li><li><a shape="rect" href="building.html">Building</a></li><li><a shape="rect" href="developer-guide.html">Developer Guide</a></li><li><a shape="rect" href="becoming-a-committer.html">Becoming a committer</a></li><li><a shape="rect" href="code-overview.html">Code Overview</a></li><li><a shape="rect" href="wire-protocol.html">Wire Protocol</a></li><li><a shape="rect" href="release-guide.html">Release Guide</a></li></ul><h3 id="Navigation-Tests">Tests</h3><ul class="alternate"><li><a shape="rect" href="activemq-performance-module-users-manual.html">Maven2 Performance Plugin</a></li><li><a shape="rect" href="benchmark-tests.html">Benchmark Tests</a></li><li><a shape="rect" href="jmeter-system-tests.html">JMeter System Tests</a></li><li><a shape="rect" href="jmeter-performance-tests.html">JMeter Performance Tests</a></li><li><a shape="rect" href="integration-tests.html">Integration Tests</a></li></ul><h3 id="Navigation-ProjectReports">Project Reports</h3><ul class="alternate"><li><a shape="rect" href="junit-reports.html">JUnit Reports</a></li><li><a shape="rect" href="source-xref.html">Source XRef</a></li><li><a shape="rect" href="test-source-xref.html">Test Source XRef</a></li><li><a shape="rect" href="xml-reference.html">Xml Reference</a></li></ul>
               </div>
             </div>
           </div>
         </td>
         </tr>
   </tbody>
         </table>
         <div class="bottom_red_bar"></div>
       </div>
     </div>
   </div>
 </div>
 <div class="black_box">
 <div class="footer">
   <div class="footer_l">
     <div class="footer_r">
       <div>
         <a href="http://activemq.apache.org/privacy-policy.html">Privacy Policy</a> -
         (<a href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=36101">edit this page</a>)
       </div>
     </div>
   </div>
 </div>
 </div>
 </div>
 <div class="design_attribution">
 &copy; 2004-2011 The Apache Software Foundation.
 <br/>
 Apache ActiveMQ, ActiveMQ, Apache, the Apache feather logo, and the Apache ActiveMQ project logo are trademarks of The Apache Software Foundation.  All other marks mentioned may be trademarks or registered trademarks of their respective owners.
 <br/>
 <a href="http://hiramchirino.com">Graphic Design By Hiram</a>
 </div>

 <!-- delay the loading of large javascript files to the end so that they don't interfere with the loading of page content -->
 <span style="display: none">
   <script type="text/javascript">
     var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
     document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
   </script>
   <script type="text/javascript">
     var pageTracker = _gat._getTracker("UA-1347593-1");
     pageTracker._initData();
     pageTracker._trackPageview();
   </script>
 </span>
 </body>
 </html>
	<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
	<!--

	Licensed to the Apache Software Foundation (ASF) under one or more
	contributor license agreements. See the NOTICE file distributed with
	this work for additional information regarding copyright ownership.
	The ASF licenses this file to You under the Apache License, Version 2.0
	(the "License"); you may not use this file except in compliance with
	the License. You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.
	-->
	<html>
	<head>
	<link href="http://activemq.apache.org/styles/site.css" rel="stylesheet" type="text/css"/>
	<link href="http://activemq.apache.org/styles/type-settings.css" rel="stylesheet" type="text/css"/>
	<script src="http://activemq.apache.org/styles/prototype.js" type="text/javascript"></script>
	<script src="http://activemq.apache.org/styles/rico.js" type="text/javascript"></script>
	<script src="http://activemq.apache.org/styles/site.js" type="text/javascript"></script>
	<style type="text/css">
	.maincontent { overflow:hidden; }
	</style>
	<!--[if IE]>
	<style type="text/css">
	.maincontent { width:100%; }
	</style>
	<![endif]-->


	<title>
	Apache ActiveMQ ™ -- How do durable queues and topics work
	</title>
	</head>
	<body>
	<div class="white_box">
	<div class="header">
	<div class="header_l">
	<div class="header_r">
	</div>
	</div>
	</div>
	<div class="content">
	<div class="content_l">
	<div class="content_r">
	<div>

	<!-- Banner -->
	<div id="asf_logo">
	<div id="activemq_logo">
	<a shape="rect" style="float:left; width:280px;display:block;text-indent:-5000px;text-decoration:none;line-height:60px; margin-top:10px; margin-left:100px;" href="http://activemq.apache.org" title="The most popular and powerful open source Message Broker">ActiveMQ</a>
	<a shape="rect" style="float:right; width:210px;display:block;text-indent:-5000px;text-decoration:none;line-height:60px; margin-top:15px; margin-right:10px;" href="http://www.apache.org" title="The Apache Software Foundation">ASF</a>
	</div>
	</div>

	<div class="top_red_bar">
	<div id="site-breadcrumbs">
	<a href="community.html">Community</a> > <a href="faq.html">FAQ</a> > <a href="jms.html">JMS</a> > <a href="how-do-durable-queues-and-topics-work.html">How do durable queues and topics work</a>
	</div>
	<div id="site-quicklinks">
	<p><a shape="rect" href="download.html">Download</a> \| <a shape="rect" class="external-link" href="http://activemq.apache.org/maven/apidocs/index.html">JavaDocs</a> <a shape="rect" href="javadocs.html">More...</a> \| <a shape="rect" href="source.html">Source</a> \| <a shape="rect" href="discussion-forums.html">Forums</a> \| <a shape="rect" href="support.html">Support</a></p>
	</div>
	</div>

	<table border="0">
	<tbody>
	<tr>
	<td valign="top" width="100%">
	<div class="wiki-content maincontent"><p>Durable queues keep messages around persistently for any suitable consumer to consume them. Durable queues do not need to concern themselves with which consumer is going to consume the messages at some point in the future. There is just one copy of a message that any consumer in the future can consume.</p>

	<p>Durable topics however are different as they must logically persist an instance of each suitable message for every durable consumer - since each durable consumer gets their own copy of the message.</p>

	<p>For example imagine a durable subscriber S starts up subscribing to topic T at time D1. Some publisher sends messages M1, M2, M3 to the topic and S will receive each of these messages. Then S is stopped and the publisher continues to send M4, M5.</p>

	<p>When S restarts at D2, the publisher sends M6 and M7. Now S will receive M4, M5 followed by M6 and M7 and all future messages. i.e. S will receive all messages from M1..M7.</p>

	<p>This is the difference between durable and non-durable consuming. If S were a non-durable consumer then it would only have received M1, M2, M3 and M6, M7 - not M4 and M5. i.e. because the subscription is durable, S will receive every message sent to T whether the subscriber is running or not. For non-durable topics, only messages delivered to the topic T when S is running are delivered.</p>

	<p>So for durable topic subscription, the JMS provider needs to be able to identify S when it shuts down and later on in the future reconnects, so it can know what messages to send to it while it was not running. JMS specification dictates that the identification of S is done by a combination of the clientID and the durable subscriber name. This is so that the JMS connection S uses can have many different durable subscriptions on different topics or on the same topic with different selectors - yet the JMS provider can know which message for which subscription to keep around for it.</p>

	<p>So setting the clientID on a JMS connection is vital (along with using a sensible durable consumer name) for durable topic subscription. Its not an issue for other <a shape="rect" href="qos.html">QoS</a></p></div>
	</td>
	<td valign="top">
	<div class="navigation">
	<div class="navigation_top">
	<div class="navigation_bottom">
	<h3 id="Navigation-Overviewhttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35985"><a shape="rect" href="overview.html">Overview</a></h3><ul class="alternate"><li><a shape="rect" href="index.html">Index</a></li><li><a shape="rect" href="news.html">News</a></li><li><a shape="rect" href="new-features.html">New Features</a></li><li><a shape="rect" href="getting-started.html">Getting Started</a></li><li><a shape="rect" href="faq.html">FAQ</a></li><li><a shape="rect" href="articles.html">Articles</a></li><li><a shape="rect" href="books.html">Books</a></li><li><a shape="rect" href="download.html">Download</a></li><li><a shape="rect" class="external-link" href="http://www.apache.org/licenses/">License</a></li></ul><h3 id="Navigation-Search">Search</h3><div>
	<form enctype="application/x-www-form-urlencoded" method="get" action="http://www.google.com/search" style="font-size: 10px;">
	<input type="hidden" name="ie" value="UTF-8">
	<input type="hidden" name="oe" value="UTF-8">
	<input maxlength="255" type="text" name="q" size="15" value="value"><br clear="none">
	<input type="submit" name="btnG" value="Search">
	<input type="hidden" name="domains" value="activemq.apache.org">
	<input type="hidden" name="sitesearch" value="activemq.apache.org">
	</form>
	</div>
	<h3 id="Navigation-SubProjects">Sub Projects</h3><ul class="alternate"><li><a shape="rect" class="external-link" href="http://activemq.apache.org/artemis/">Artemis</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/apollo" title="ActiveMQ Apollo">Apollo</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/cms/">CMS</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/nms/" title="NMS is the .Net Messaging API">NMS</a></li></ul><h3 id="Navigation-Communityhttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=36130"><a shape="rect" href="community.html">Community</a></h3><ul class="alternate"><li><a shape="rect" href="support.html">Support</a></li><li><a shape="rect" href="contributing.html">Contributing</a></li><li><a shape="rect" href="discussion-forums.html">Discussion Forums</a></li><li><a shape="rect" href="mailing-lists.html">Mailing Lists</a></li><li><a shape="rect" href="irc.html">IRC</a></li><li><a shape="rect" class="external-link" href="http://javabot.evanchooly.com/logs/%23apache-activemq/today" rel="nofollow">IRC Log</a></li><li><a shape="rect" href="security-advisories.html">Security Advisories</a></li><li><a shape="rect" href="site.html">Site</a></li><li><a shape="rect" class="external-link" href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li><li><a shape="rect" href="projects-using-activemq.html">Projects Using ActiveMQ</a></li><li><a shape="rect" href="users.html">Users</a></li><li><a shape="rect" href="team.html">Team</a></li><li><a shape="rect" href="thanks.html">Thanks</a></li></ul><h3 id="Navigation-Featureshttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35883"><a shape="rect" href="features.html">Features</a></h3><ul class="alternate"><li><a shape="rect" href="advisory-message.html">Advisory Message</a></li><li><a shape="rect" href="clustering.html">Clustering</a></li><li><a shape="rect" href="cross-language-clients.html">Cross Language Clients</a></li><li><a shape="rect" href="enterprise-integration-patterns.html">Enterprise Integration Patterns</a></li><li><a shape="rect" href="jmx.html">JMX</a></li><li><a shape="rect" href="jms-to-jms-bridge.html">JMS to JMS Bridge</a></li><li><a shape="rect" href="masterslave.html">MasterSlave</a></li><li><a shape="rect" href="message-groups.html">Message Groups</a></li><li><a shape="rect" href="networks-of-brokers.html">Networks of Brokers</a></li><li><a shape="rect" href="performance.html">Performance</a></li><li><a shape="rect" href="persistence.html">Persistence</a></li><li><a shape="rect" href="security.html">Security</a></li><li><a shape="rect" href="virtual-destinations.html">Virtual Destinations</a></li><li><a shape="rect" href="visualisation.html">Visualisation</a></li><li><a shape="rect" href="features.html">More ...</a></li></ul><h3 id="Navigation-Connectivityhttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=36167"><a shape="rect" href="connectivity.html">Connectivity</a></h3><ul class="alternate"><li><a shape="rect" href="ajax.html">Ajax</a></li><li><a shape="rect" href="amqp.html">AMQP</a></li><li><a shape="rect" href="axis-and-cxf-support.html">Axis and CXF Support</a></li><li><a shape="rect" href="c-integration.html">C Integration</a></li><li><a shape="rect" href="activemq-c-clients.html">C++</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/nms/">C# and .Net Integration</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/cms/">CMS</a></li><li><a shape="rect" href="j2ee.html">J2EE</a></li><li><a shape="rect" href="jboss-integration.html">JBoss Integration</a></li><li><a shape="rect" class="external-link" href="http://docs.codehaus.org/display/JETTY/Integrating+with+ActiveMQ" rel="nofollow">Jetty</a></li><li><a shape="rect" href="jndi-support.html">JNDI Support</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/nms/" title="NMS is the .Net Messaging API">NMS</a></li><li><a shape="rect" href="rest.html">REST</a></li><li><a shape="rect" href="rss-and-atom.html">RSS and Atom</a></li><li><a shape="rect" href="spring-support.html">Spring Support</a></li><li><a shape="rect" href="stomp.html">Stomp</a></li><li><a shape="rect" href="tomcat.html">Tomcat</a></li><li><a shape="rect" href="unix-service.html">Unix Service</a></li><li><a shape="rect" href="weblogic-integration.html">WebLogic Integration</a></li><li><a shape="rect" href="xmpp.html">XMPP</a></li><li><a shape="rect" href="connectivity.html">More ...</a></li></ul><h3 id="Navigation-UsingActiveMQ5https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=71176"><a shape="rect" href="using-activemq-5.html">Using ActiveMQ 5</a></h3><ul class="alternate"><li><a shape="rect" href="version-5-getting-started.html">Getting Started</a></li><li><a shape="rect" href="version-5-initial-configuration.html">Initial Configuration</a></li><li><a shape="rect" href="version-5-run-broker.html">Running a Broker</a></li><li><a shape="rect" href="how-do-i-embed-a-broker-inside-a-connection.html">Embedded Brokers</a></li><li><a shape="rect" href="activemq-command-line-tools-reference.html">Command Line Tools</a></li><li><a shape="rect" href="configuring-version-5-transports.html">Configuring Transports</a></li><li><a shape="rect" href="version-5-examples.html">Examples</a></li><li><a shape="rect" href="version-5-web-samples.html">Web Samples</a></li><li><a shape="rect" href="how-can-i-monitor-activemq.html">Monitoring the Broker</a></li><li><a shape="rect" href="version-5-xml-configuration.html">Xml Configuration</a></li><li><a shape="rect" href="xml-reference.html">Xml Reference</a></li><li><a shape="rect" href="using-activemq-5.html">More ...</a></li></ul><h3 id="Navigation-Toolshttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35912"><a shape="rect" href="tools.html">Tools</a></h3><ul class="alternate"><li><a shape="rect" href="web-console.html">Web Console</a></li><li><a shape="rect" href="activemq-performance-module-users-manual.html">Maven2 Performance Plugin</a></li></ul><h3 id="Navigation-Supporthttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35919"><a shape="rect" href="support.html">Support</a></h3><ul class="alternate"><li><a shape="rect" class="external-link" href="http://issues.apache.org/jira/browse/AMQ">Issues</a></li><li><a shape="rect" class="external-link" href="http://issues.apache.org/activemq/browse/AMQ?report=com.atlassian.jira.plugin.system.project:roadmap-panel">Roadmap</a></li><li><a shape="rect" class="external-link" href="http://issues.apache.org/activemq/browse/AMQ?report=com.atlassian.jira.plugin.system.project:changelog-panel">Change log</a></li></ul><h3 id="Navigation-Developershttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=35903"><a shape="rect" href="developers.html">Developers</a></h3><ul class="alternate"><li><a shape="rect" href="source.html">Source</a></li><li><a shape="rect" href="building.html">Building</a></li><li><a shape="rect" href="developer-guide.html">Developer Guide</a></li><li><a shape="rect" href="becoming-a-committer.html">Becoming a committer</a></li><li><a shape="rect" href="code-overview.html">Code Overview</a></li><li><a shape="rect" href="wire-protocol.html">Wire Protocol</a></li><li><a shape="rect" href="release-guide.html">Release Guide</a></li></ul><h3 id="Navigation-Tests">Tests</h3><ul class="alternate"><li><a shape="rect" href="activemq-performance-module-users-manual.html">Maven2 Performance Plugin</a></li><li><a shape="rect" href="benchmark-tests.html">Benchmark Tests</a></li><li><a shape="rect" href="jmeter-system-tests.html">JMeter System Tests</a></li><li><a shape="rect" href="jmeter-performance-tests.html">JMeter Performance Tests</a></li><li><a shape="rect" href="integration-tests.html">Integration Tests</a></li></ul><h3 id="Navigation-ProjectReports">Project Reports</h3><ul class="alternate"><li><a shape="rect" href="junit-reports.html">JUnit Reports</a></li><li><a shape="rect" href="source-xref.html">Source XRef</a></li><li><a shape="rect" href="test-source-xref.html">Test Source XRef</a></li><li><a shape="rect" href="xml-reference.html">Xml Reference</a></li></ul>
	</div>
	</div>
	</div>
	</td>
	</tr>
	</tbody>
	</table>
	<div class="bottom_red_bar"></div>
	</div>
	</div>
	</div>
	</div>
	<div class="black_box">
	<div class="footer">
	<div class="footer_l">
	<div class="footer_r">
	<div>
	<a href="http://activemq.apache.org/privacy-policy.html">Privacy Policy</a> -
	(<a href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=36101">edit this page</a>)
	</div>
	</div>
	</div>
	</div>
	</div>
	</div>
	<div class="design_attribution">
	© 2004-2011 The Apache Software Foundation.
	<br/>
	Apache ActiveMQ, ActiveMQ, Apache, the Apache feather logo, and the Apache ActiveMQ project logo are trademarks of The Apache Software Foundation. All other marks mentioned may be trademarks or registered trademarks of their respective owners.
	<br/>
	<a href="http://hiramchirino.com">Graphic Design By Hiram</a>
	</div>

	<!-- delay the loading of large javascript files to the end so that they don't interfere with the loading of page content -->
	<span style="display: none">
	<script type="text/javascript">
	var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
	document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
	</script>
	<script type="text/javascript">
	var pageTracker = _gat._getTracker("UA-1347593-1");
	pageTracker._initData();
	pageTracker._trackPageview();
	</script>
	</span>
	</body>
	</html>