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Subject svn commit: r860519 - in /websites/production/activemq/content: cache/main.pageCache networks-of-brokers.html
Date Wed, 01 May 2013 20:21:35 GMT
Author: buildbot
Date: Wed May  1 20:21:35 2013
New Revision: 860519

Production update by buildbot for activemq


Modified: websites/production/activemq/content/cache/main.pageCache
Binary files - no diff available.

Modified: websites/production/activemq/content/networks-of-brokers.html
--- websites/production/activemq/content/networks-of-brokers.html (original)
+++ websites/production/activemq/content/networks-of-brokers.html Wed May  1 20:21:35 2013
@@ -199,6 +199,12 @@ When disabling this feature such network
+<h4><a shape="rect" name="NetworksofBrokers-Reliability"></a>Reliability</h4>
+<p>Networks of brokers do reliable store and forward of messages. If the source is
durable, persistent messages on a queue or a durable topic subscription, a network will retain
the durability guarantee. <br clear="none">
+However networks cannot add durability when the source is non durable. Non durable topic
subscriptions and temporary destinations (both queues and topics) are non durable by definition.
When non durable<br clear="none">
+sources are networked, in the event of a failure, inflight messages can be lost.</p>
 <h4><a shape="rect" name="NetworksofBrokers-WhentouseandnotuseConduitsubscriptions"></a>When
to use and not use Conduit subscriptions</h4>
 <p>ActiveMQ relies on information about active consumers (subscriptions) to pass messages
around the network. A broker interprets a subscription from a remote (networked) broker in
the same way as it would a subscription from a local client connection and routes a copy of
any relevant message to each subscription. With Topic subscriptions and with more than one
remote subscription, a remote broker would interpret each message copy as valid, so when it
in turns routes the messages to its own local connections, duplicates would occur. Hence default
conduit behavior consolidates all matching subscription information to prevent duplicates
flowing around the network. With this default behaviour, N subscriptions on a remote broker
look like a single subscription to the networked broker.</p>

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