Hi, I am using Jboss 4.0.5EJB and would like to move to a clustered setup, but I am not sure how best to implement this. In my application requests come in via JMS, web services or http. The requests are processed a bit and then sent to external applications by JMS and the reply comes back also by JMS. I don't have any control on the external applications and have to match their specification (I can't add any data to the JMS message and expect to get it back). Do I try to work out a scheme where requests always come back to the cluster node that sent them out (multiple queues or a selector) or is there a neat way to do this better with clustering and replication? Thanks, Ken View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4050743#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...