| <!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]--> |
| |
| <link href='http://activemq.apache.org/styles/highlighter/styles/shCore.css' rel='stylesheet' type='text/css' /> |
| <link href='http://activemq.apache.org/styles/highlighter/styles/shThemeEclipse.css' rel='stylesheet' type='text/css' /> |
| <script src='http://activemq.apache.org/styles/highlighter/scripts/shCore.js' type='text/javascript'></script> |
| <script src='http://activemq.apache.org/styles/highlighter/scripts/shBrushJava.js' type='text/javascript'></script> |
| |
| <script type="text/javascript"> |
| SyntaxHighlighter.defaults['toolbar'] = false; |
| SyntaxHighlighter.all(); |
| </script> |
| |
| <title> |
| Apache ActiveMQ ™ -- ActiveMQ Async Sends |
| </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="">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">ASF</a> |
| </div> |
| </div> |
| |
| <div class="top_red_bar"> |
| <div id="site-breadcrumbs"> |
| <a href="index.html">Index</a> > <a href="apachenms.html">Apache.NMS</a> > <a href="nms-providers.html">NMS Providers</a> > <a href="apachenmsactivemq.html">Apache.NMS.ActiveMQ</a> > <a href="activemq-advanced-features.html">ActiveMQ Advanced Features</a> > <a href="activemq-message-dispatching-features.html">ActiveMQ Message Dispatching Features</a> > <a href="activemq-async-sends.html">ActiveMQ Async Sends</a> |
| </div> |
| <div id="site-quicklinks"> |
| <p><a shape="rect" href="download.html">Download</a> | <a shape="rect" href="nms-api.html">API</a> | <a shape="rect" href="source.html">Source</a> | <a shape="rect" class="external-link" href="http://activemq.apache.org/discussion-forums.html">Forums</a> | <a shape="rect" class="external-link" href="http://activemq.apache.org/support.html">Support</a></p> |
| </div> |
| </div> |
| |
| <table border="0"> |
| <tbody> |
| <tr> |
| <td valign="top" width="100%"> |
| <div class="wiki-content maincontent"><h2 id="ActiveMQAsyncSends-Background">Background</h2> |
| |
| <p>Apache.NMS.ActiveMQ supports sending messages to a broker in sync or async mode. The mode used has a huge impact in the latency of the send call. Since latency is typically a huge factor in the throughput that can achieved by producer, using async sends can increase the performance of your system dramatically.</p> |
| |
| <p>The good news is that Apache.NMS.ActiveMQ sends message in async mode by default in several cases. It is only in cases where the JMS specification required the use of sync sending that we default to sync sending. The cases that we are forced to send in sync mode are when persistent messages are being sent outside of a transaction.</p> |
| |
| <p>If you are not using transactions and are sending persistent messages, then each send is synch and blocks until the broker has sent back an acknowledgement to the producer that the message has been safely persisted to disk. This ack provides that guarantee that the message will not be lost but it also costs a huge latency penalty since the client is blocked.</p> |
| |
| <p>Many high performance applications are designed to be tolerate a small amount of message loss in failure scenarios. If your application has been designed in this fashion, you can enable the use of async sends to increase throughput even when using persistent messages. </p> |
| |
| |
| <h3 id="ActiveMQAsyncSends-ConfiguringAsyncSendusingaConnectionURI">Configuring Async Send using a Connection URI</h3> |
| |
| <p>You can use the <a shape="rect" href="activemq-uri-configuration.html">Connection Configuration URI</a> to configure async sends as follows</p> |
| |
| <div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl"> |
| <pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;"> |
| var cf = new ConnectionFactory("tcp://locahost:61616?nms.AsyncSend=true"); |
| </pre> |
| </div></div> |
| |
| <h3 id="ActiveMQAsyncSends-ConfiguringAsyncSendattheConnectionFactoryLevel">Configuring Async Send at the ConnectionFactory Level</h3> |
| |
| <p>You can enable this feature on the Apache.NMS.ActiveMQ.ConnectionFactory object using the property.</p> |
| |
| <div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl"> |
| <pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;"> |
| ((ConnectionFactory)connectionFactory).AsyncSend = true; |
| </pre> |
| </div></div> |
| |
| <h3 id="ActiveMQAsyncSends-ConfiguringAsyncDispatchattheConnectionLevel">Configuring Async Dispatch at the Connection Level</h3> |
| |
| <p>Configuring the async send setting at this level overrides the settings at the connection factory level.</p> |
| |
| <p>You can enable this feature on the Apache.NMS.ActiveMQ.Connection object using the property.</p> |
| |
| <div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl"> |
| <pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;"> |
| ((Apache.NMS.ActiveMQ.Connection)connection).AsyncSend = true; |
| </pre> |
| </div></div> |
| |
| <h3 id="ActiveMQAsyncSends-Alsosee">Also see</h3> |
| |
| <ul><li><a shape="rect" href="activemq-uri-configuration.html">Connection Configuration URI</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/should-i-use-transactions.html">Should I use transactions</a></li><li><a shape="rect" href="activemq-consumer-dispatch-async.html">Consumer Dispatch Async</a></li></ul></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=45788"><a shape="rect" href="overview.html">Overview</a></h3> |
| |
| <ul class="alternate"><li><a shape="rect" href="index.html">Home</a></li><li><a shape="rect" href="faq.html">FAQ</a></li><li><a shape="rect" href="download.html">Download</a></li></ul> |
| |
| |
| <h3 id="Navigation-UsingNMShttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=117579"><a shape="rect" href="using-nms.html">Using NMS</a></h3> |
| |
| <ul class="alternate"><li><a shape="rect" href="apachenms.html">NMS Overview</a></li><li><a shape="rect" href="nms.html">Getting Started</a></li><li><a shape="rect" href="nms-api.html">NMS API Reference</a></li><li><a shape="rect" href="apachenmsactivemq.html">ActiveMQ</a></li><li><a shape="rect" href="apachenmsstomp.html">Stomp</a></li><li><a shape="rect" href="apachenmsmsmq.html">MSMQ</a></li><li><a shape="rect" href="apachenmsems.html">Tibco EMS</a></li><li><a shape="rect" href="apachenmswcf.html">WCF</a></li></ul> |
| |
| |
| <h3 id="Navigation-Search">Search</h3> |
| <p></p><p> |
| </p><form enctype="application/x-www-form-urlencoded" method="get" id="cse-search-box" action="http://www.google.com/cse"> |
| <div> |
| <input type="hidden" name="cx" value="007878419884033443453:m5nhvy4hmyq"> |
| <input type="hidden" name="ie" value="UTF-8"> |
| <input type="text" name="q" size="21"> |
| <input type="submit" name="sa" value="Search"> |
| </div> |
| </form> |
| <script type="text/javascript" src="http://www.google.com/coop/cse/brand?form=cse-search-box&lang=en"></script> |
| <p></p> |
| |
| <h3 id="Navigation-Communityhttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=45789"><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" class="external-link" href="http://activemq.apache.org/contributing.html">Contributing</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/discussion-forums.html">Discussion Forums</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/mailing-lists.html">Mailing Lists</a></li><li><a shape="rect" class="external-link" href="irc://irc.codehaus.org/activemq" rel="nofollow">IRC</a></li><li><a shape="rect" href="articles.html">Articles</a></li><li><a shape="rect" href="site.html">Site</a></li><li><a shape="rect" class="external-link" href="http://activemq.apache.org/team.html">Team</a></li></ul> |
| |
| |
| <h3 id="Navigation-Developershttps://cwiki.apache.org/confluence/pages/viewpage.action?pageId=45790"><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></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=25202294">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> |
