CLUSTER SET-CONFIG-EPOCH config-epoch

Time complexity: O(1)

However there is an exception to this rule, and it is when a new cluster is created from scratch. Redis Cluster config epoch collision resolution algorithm can deal with new nodes all configured with the same configuration at startup, but this process is slow and should be the exception, only to make sure that whatever happens, two more nodes eventually always move away from the state of having the same configuration epoch.

Simple string reply: OK if the command was executed successfully, otherwise an error is returned.