[jboss-jira] [JBoss JIRA] (JGRP-2411) JGraSS: JGroups as a Service

[Bela Ban (Jira)]

Bela Ban created JGRP-2411:
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             Summary: JGraSS: JGroups as a Service
                 Key: JGRP-2411
                 URL: https://issues.jboss.org/browse/JGRP-2411
             Project: JGroups
          Issue Type: Feature Request
            Reporter: Bela Ban
            Assignee: Bela Ban
             Fix For: 4.1.9


Provide a separate server implementation of Channel (_server service_) which runs as a separate process, plus a client stub ({{RemoteChannel}}, implementing {{Channel}}) which communicates with the service.

The communication is across pipes/sockets/shared memory (TBD) and assumes servers and clients are on the same host. Most method calls of {{Channel}} need to be supported. 

h3. Advantages

h4. Fast replacement
The server process could be replaced on the fly with a different server process, e.g. using a different configuration.
If compiled down to a native image (using GraalVM), this would take only a few milliseconds.

h4. Rolling upgrades
We could have a Channel implementation, which communicates with multiple remote JGroups servers, sending messages to both and receiving messages from both servers.
One server could be running 3.6. Later, a 4.x server could be added and when all members have a dual-channel, the 3.6 channels could be shut down, effectively performing a rolling upgrade.




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