45 lines
2.3 KiB
HTML
45 lines
2.3 KiB
HTML
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<html>
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<head>
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<title>ActiveMQ Artemis JMS Failover Without Transactions 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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<h1>JMS Failover Without Transactions 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 two servers coupled as a live-backup pair for high availability (HA), and a client
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connection failing over from live to backup when the live server is crashed.</p>
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<p>Failover behavior differs whether the JMS session is transacted or not.</p>
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<p>When a <em>non-transacted</em> JMS session is used, once and only once delivery is not guaranteed
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and it is possible some messages will be lost or delivered twice, depending when the failover to the backup server occurs.</p>
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<p>It is up to the client to deal with such cases. To ensure once and only once delivery, the client must
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use transacted JMS sessions (as shown in the example for <a href="../transaction-failover/readme.html">failover with transactions</a>).</p>
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<p>For more information on ActiveMQ Artemis failover and HA, 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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