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| <div id="ConfluenceContent"><p>CXF JMS should be very fast if configured correctly. There are two major settings that affect performance: pooling and synchronous receives on client side.</p><h2 id="JMSperformanceandpooling-Pooling">Pooling</h2><p>On the client side CXF creates a new JMS Session and Producer for each message. This is necessary as these JMS objects are not thread safe. Especially creating a Producer is very time intensive though as a communication with the server is necessary.</p><p>Connection Factory pools help to improve perfomance by caching the Connection, Session and Producer.</p><p>For ActiveMQ configuring pooling is quite simple:</p><div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>Pooling for ActiveMQ</b></div><div class="codeContent panelContent pdl"> |
| <pre class="brush: java; gutter: false; theme: Default">import org.apache.activemq.ActiveMQConnectionFactory; |
| import org.apache.activemq.pool.PooledConnectionFactory; |
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| ConnectionFactory cf = new ActiveMQConnectionFactory("tcp://localhost:61616"); |
| PooledConnectionFactory pcf = new PooledConnectionFactory(); |
| pcf.setExpiryTimeout(5000); // Make sure to set expiry timeout as the default of 0 prevents reconnect on failures |
| pcf.setConnectionFactory(cf); |
| |
| JMSConfiguration jmsConfig = new JMSConfiguration(); |
| jmsConfig.setConnectionFactory(pcf);</pre> |
| </div></div><h2 id="JMSperformanceandpooling-SynchronousReceivesonclientside">Synchronous Receives on client side</h2><p>For request / reply exchanges the JMS transport sends a request and waits for a reply. Whenever possible this is done using a JMS MessageListener. In some cases though CXF has to use a synchronous Consumer.receive() instead. The problem here is that CXF needs to be able to share queues between endpoints. So a MessageListener needs to use a MessageSelector to filter the messages. This selector needs to be known in advance so the listener can be opened once.</p><p>There are two cases where this is not possible:</p><ol><li>MessageIdAsCorrelationId: If useConduitIdSelector is false and no static conduitIdSelectorPrefix is given then the client does not set a correlation id. The server then uses the message id of the request message as correlation id. As this id can not be known in advance the client has to use a synchronous Consumer.receive. This pattern is also necessary for communication with IBM JMS endpoints as they use this by default</li><li>The user can set the JMSMessageHeadersType in the request message and there do a SetJMSCorrelationID("customid"). In this case CXF also has to use a synchronous Consumer.receive()</li></ol><p>So the general rule here is to avoid these settings that lead to the synchronous receives.</p><h2 id="JMSperformanceandpooling-Expectedperfomance">Expected perfomance</h2><p>On a fast system (Intel Core i7) and with small messages CXF can achieve a performance of about 12,000 messages per second for one way and 3,500 transactions / second for request reply (both non persistent). If you measure much lower speeds then you might have an issue with your JMS configuration.</p><p> </p></div> |
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