[jboss-jira] [JBoss JIRA] Created: (JBMESSAGING-1340) In memory session replication

[Tim Fox (JIRA)]

In memory session replication
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                 Key: JBMESSAGING-1340
                 URL: http://jira.jboss.com/jira/browse/JBMESSAGING-1340
             Project: JBoss Messaging
          Issue Type: Task
            Reporter: Tim Fox
         Assigned To: Tim Fox
            Priority: Critical
             Fix For: 2.0.0 Beta


Implement in memory replication of sessions.

It will be possible to replicate sessions to a backup node.

The replication needs to happen in memory sychronously.

Write to journal on both nodes can be lazy (asynchronous) since on failover we can be sure it is in memory on backup so no single point of failover.

But can persist to disk asynchronously?? I think we can persist to disk asynchrnously on the master node, but needs to be synchronous on the backup node, in case we get a failure of the backup too shortly after failure of the master.

If we can tolerate duplicate messages (or messages thought sent but not store) in a double failure then can do asynchronous storage on both master and slave.

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