Redis CLUSTERDOWN Error

We are seeing CLUSTERDOWN issue like thousands of times, we don't see any reason for this issue related to Redis Client Library and still, Redis Server throws this error - as a result we are losing data obtained from Redis Server.

Any help is really appreciated.

Redis Library: 3.1.0 Spring Data Redis: 2.2.3.RELEASE Redis Server: 5.0.4

Comment From: deepakshivanandappa

Update - We understood the real problem for "ClusterDown" Error. During PUB/SUB heavy load, the cluster bus becomes overloaded. As a result PONG packets got delayed, which in turn causes spurious PFAIL states, then FAIL and then CLUSTER-DOWN state.

Fix PR - https://github.com/antirez/redis/pull/7216