I just talked to jason. He made up my mind: the addressing issue and state replication are actually two different problems. In order to get you started i suggest you forget about the addressing problems for now and take a look at jboss cache for replicating the subscriptions across cluster nodes. We'd need an abstraction though, that can be addressed from the subscription manager and comes in two flavors: cluster aware (jbosscache) and in-memory (the default). IMO this should be some general purpose StateManager that offers a hashmap like API to get and set data. This would only leave us with the question how to deal with node shutdowns and subscription end messages... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3989753#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...