dwr in a clustered environment: ClusterScriptSessionManager?

Hi all,
We are currently developing a project which uses dwr2.0-m3 (haven't tried m4 yet) integrated with spring.
We've developed a message notification structure from business layer to webbrowser, based in ApplicationEvent
 publications through the ApplicationContext to notify ScriptSessions polling for them, but now we've got a
 new requisite: deploying the application in a clustered environment.
 
So in the new scenario, events will arise in the business layer of any of the clusters... but our
ScriptSessionManager only will know about ScriptSessions directly connected to that node! So... we won't be
able to notify sessions connected to other nodes. Even more, we are not able to use sticky sessions, so when
 polling, a request could be directed to a node, but the next one could be referenced to another one!

So every node in the cluster must be aware of al ScriptSessions and all published events of all other nodes.
This is why we are thinking about designing a ClusterScriptSessionManager, that using jgroups, would notify
every node in the cluster about new ScriptSessions, and broadcast the addScript info, so any node the request
is polled, would now about the pending scripts.

What do you think about it? There is a simplier solution perhaps? Has someone faced this problem before?

Thanks in advance,

Marc


(excuse me for my english)