Buddy replication should not be used in a situation where you're expecting multiple servers to be concurrently modifying the same node. It's meant for use cases where one server owns the data. Buddy replication combined with INVALIDATION doesn't make sense. Invalidation means, "I have the latest data; you may be out of date, so throw away your data." Sending such a message to a limited subset of the cluster doesn't make sense. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3994367#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...