"bstansberry(a)jboss.com" wrote : What is the traffic between the "front end" and the "middleware"? EJB invocations? Hiya, thanks for the reply. Yes, they are boss just JBoss instances, in development they are all in /opt/jboss/server/default/deploy but on our production systems they are on different machines, the frontends are stateful and the middleware is stateless. Chris View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4236574#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...