[ https://issues.jboss.org/browse/WFLY-3644?page=com.atlassian.jira.plugin.... ] Tarek Hammoud commented on WFLY-3644: ------------------------------------- Paul, The request is nothing but an act of desperation on my part. I opened an infinispan forum question (On this ticket) asking the simply question if cross-site Invalidation is supported. Looking at the infinispan code (JGroupsTransport), I noticed that no RPC calls were being issued under my setup when an entity is changed. Without cross site (Relay), servers in a UDP (or TCP) defined clusters worked fine. However, we have multiple data centers and we really want to use UDP Multicast in each and only send TCP once per remote site. My test setup is simple. Two machines each running in its own cluster bridged by a TCP relay. Infinispan does not fire. Put the same machines in a cluster and it works just fine. Looking at the code, I did notice code that fires if Backups exist. My thought process was maybe if backups are there, then infinispan will somehow someway fire the site commands. Never bought my own theory as why that is needed because it really made zero sense and you just confirmed my thoughts. -- This message was sent by Atlassian JIRA (v6.2.6#6264)