I have attached a patch for MessageGroupRouting (JBMESSAGING-375) in JIRA. The patch contains the new Router, some tests, a temporary modification of PagingFilteredQueue.java ( to enable the new Router), and some modifications to the RoundRobinPointToPointRouter to extend it. This should NOT be considered as a final patch, but it should be enough to demonstrate a working solution I can improve and complete based on feedback. There are two minor things left (which I'm currently aware of :) ). 1)A way to enable the router by configuration, so that the PagingFilteredQueue can create a router based on this configuration. Maybe a mbean attribute on the queue configuration <consumer-routing-policy>message-group-routing</consumer-routing-policy> or something ? 2) I should also try to make the algorithm more readable and avoid some code duplication. I have done some testing to simulate different scenarios where receivers are closing and client side buffers gets full. But there may be scenarios I have not thought about :). Stian View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4054317#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...