jinrongluo opened a new issue #546:
URL: https://github.com/apache/incubator-eventmesh/issues/546
In production deployment of eventmesh in cloud environment, eventmesh
cluster of multiple instances is required for high availability and fault
tolerance.
From the code study, eventmesh runtime using local cache Concurrent Map to
store client and session information. For example,
- HTTP Server side: localConsumerGroupMapping and localClientInfoMapping
- TCP Server side: sessionTable and clientGroupMap
My question is when multiple eventmesh runtime is running, how these local
cache map synchronized?
If these local cache are not synchronized, problem happen when incoming
requests are load balanced into the cluster.
For example, a **SUBSCRIBE** request is routed to eventmesh runtime instance
1. then later **UNSUBSCRIBE** request is routed to to instance 2, UNSUBSCRIBE
request will failed. (That's because the actual subscriber is in instance1)
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