activemq-artemis

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Martyn Taylor 4922a7618a Bump to next version to 1.3.0-SNAPSHOT		2016-01-20 17:25:07 +00:00
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readme.html

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<html>
  <head>
    <title>ActiveMQ Artemis JMS Load Balanced Clustered Queue Example</title>
    <link rel="stylesheet" type="text/css" href="../../../common/common.css" />
    <link rel="stylesheet" type="text/css" href="../../../common/prettify.css" />
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     <h1>JMS Load Balanced Clustered Queue Example</h1>

     <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>

     <p>This example demonstrates a JMS queue deployed on two different nodes. The two nodes are configured to form a cluster.</p>
     <p>We then create a consumer on the queue on each node, and we create a producer on only one of the nodes.</p>
     <p>We then send some messages via the producer, and we verify that <b>both</b> consumers receive the sent messages
     in a round-robin fashion.</p>
     <p>In other words, ActiveMQ Artemis <b>load balances</b> the sent messages across all consumers on the cluster</p>
     <p>This example uses JNDI to lookup the JMS Queue and ConnectionFactory objects. If you prefer not to use
     JNDI, these could be instantiated directly.</p>
     <p>Here's the relevant snippet from the server configuration, which tells the server to form a cluster between the two nodes
     and to load balance the messages between the nodes.</p>
     <pre class="prettyprint">
     <code>&lt;cluster-connection name="my-cluster"&gt;
        &lt;address&gt;jms&lt;/address&gt;
        &lt;connector-ref>netty-connector&lt;/connector-ref>
        &lt;retry-interval&gt;500&lt;/retry-interval&gt;
        &lt;use-duplicate-detection&gt;true&lt;/use-duplicate-detection&gt;
        &lt;message-load-balancing&gt;STRICT&lt;/message-load-balancing&gt;
        &lt;max-hops&gt;1&lt;/max-hops&gt;
        &lt;discovery-group-ref discovery-group-name="my-discovery-group"/&gt;
     &lt;/cluster-connection&gt;
     </code>
     </pre>
     <p>For more information on ActiveMQ Artemis load balancing, and clustering in general, please see the clustering
     section of the user manual.</p>
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