JBoss Messaging 1.2.0.Alpha2 released

[timfox]

JBoss Messaging 1.2.0.Alpha2 has been released and it is available for download on jboss.org (http://labs.jboss.com/portal/jbossmessaging/downloads) and sourceforge (http://sourceforge.net/project/showfiles.php?group_id=22866&package_id=157261).

This release contains a full implementation of distributed queues and topics with full message redistribution.
It does not currently support failover.

The final 1.2.GA release, due in February 2007, will provide a highly sophisticated clustering implementation, which will allow smooth distribution of the application load across the cluster, intelligent balancing with no single point of failure, high availability and transparent fail-over.

The current alpha release offers support for distributed destinations. For an overview of this release's features, consult the new ClusteringGuide included with the release bundle. You will also find a distributed topic example that runs out of the box, which will help you getting started with the new clustering features.


Please be aware that the current release is a preview alpha release. We strongly advise against using it in a production environment.

The complete list of changes introduced by this release is available at http://jira.jboss.com/jira/secure/ReleaseNote.jspa?projectId=12310061&styleName=Html&version=12311017.

The JBoss Messaging project roadmap is available here: http://jira.jboss.org/jira/browse/JBMESSAGING?report=com.atlassian.jira.plugin.system.project:roadmap-panel.

[timfox]

The main thing in this release is a stable implementation of message redistribution.

This is the feature whereby messages are automatically distributed between nodes according to how fast/slow consumers are on different nodes.

I'd be particularly interested in any results in a "real" environment if anyone is willing to give it a go and experiment.

How to configure this is explained in the clustering guide inside the distribution.

Basically you just need to specify the MessagePullPolicy in the post office config as so:

<attribute name="MessagePullPolicy">org.jboss.messaging.core.plugin.postoffice.cluster.DefaultMessagePullPolicy</attribute>

You may also want to reduce the stats send period to a lower value.