[infinispan-issues] [JBoss JIRA] Commented: (ISPN-573) Allow LAN RPCs to be SYNC while WAN RPCs to be ASYNC

Allow LAN RPCs to be SYNC while WAN RPCs to be ASYNC ---------------------------------------------------- Key: ISPN-573 URL: https://jira.jboss.org/browse/ISPN-573 Project: Infinispan Issue Type: Feature Request Components: RPC Affects Versions: 4.1.0.CR2 Reporter: Manik Surtani Assignee: Manik Surtani Fix For: 5.1.0.BETA1, 5.1.0.Final This will allow for interesting WAN architectures where RPC messages to members within the same LAN would be sent synchronously and RPC messages to remote members across a WAN to be sent asynchronously. This will allow for a cluster to span 2 data centres, (configured using TCP, for example), while allowing for *some* backups to be in the same data centre while others reside in a remote data centre. From an email thread: "So even if you have 4 owners, 2 in each DC, the "local" replication, there will be no way to write to the local backup synchronously and the remote backups asynchronously. I.e., either all comms are sync or all comms are async. Maybe this is something we can add in Infinispan. I.e., with node hints (https://jira.jboss.org/browse/ISPN-180) (*) we could detect which recipients are local and which are remote, and accordingly split the RPC into 2: a sync local RPC and an async remote RPC. (*) Node hinting isn't strictly necessary; the naming convention you mentioned earlier would work in this regard as well, although I think these hints is probably a better universal solution since we need this for other things anyway."