59 lines
3.0 KiB
HTML
59 lines
3.0 KiB
HTML
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing,
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<html>
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<head>
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<title>ActiveMQ Artemis JMS Load Balanced Static Clustered Queue Example</title>
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<link rel="stylesheet" type="text/css" href="../../../common/common.css" />
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<link rel="stylesheet" type="text/css" href="../../../common/prettify.css" />
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<script type="text/javascript" src="../../../common/prettify.js"></script>
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</head>
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<body onload="prettyPrint()">
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<h1>JMS Load Balanced Static Clustered Queue Example</h1>
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<pre>To run the example, simply type <b>mvn verify</b> from this directory, <br>or <b>mvn -PnoServer verify</b> if you want to start and create the server manually.</pre>
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<p>This example demonstrates a JMS queue deployed on two different nodes. The two nodes are configured to form a cluster
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from a <em>static</em> list of nodes.</p>
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<p>We then create a consumer on the queue on each node, and we create a producer on only one of the nodes.</p>
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<p>We then send some messages via the producer, and we verify that <b>both</b> consumers receive the sent messages
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in a round-robin fashion.</p>
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<p>In other words, ActiveMQ Artemis <b>load balances</b> the sent messages across all consumers on the cluster</p>
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<p>This example uses JNDI to lookup the JMS Queue and ConnectionFactory objects. If you prefer not to use
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JNDI, these could be instantiated directly.</p>
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<p>Here's the relevant snippet from the server configuration, which tells the server to form a cluster between the two nodes
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and to load balance the messages between the nodes.</p>
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<pre class="prettyprint">
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<code><cluster-connection name="my-cluster">
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<address>jms</address>
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<connector-ref>netty-connector</connector-ref>
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<retry-interval>500</retry-interval>
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<use-duplicate-detection>true</use-duplicate-detection>
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<message-load-balancing>STRICT</message-load-balancing>
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<max-hops>1</max-hops>
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<static-connectors>
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<connector-ref>server1-connector</connector-ref>
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</static-connectors>
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</cluster-connection>
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</code>
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</pre>
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<p>For more information on ActiveMQ Artemis load balancing, and clustering in general, please see the clustering
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section of the user manual.</p>
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</body>
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</html>
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