Redis Cluster: an interesting problem about moving hash slots around

Hash tags are used to guarantee that certain keys are placed in the same hash slot, read more about hash tags in the redis cluster tutorial

If you take a look at the error description, it says, Keys in request don't hash to the same slot, it means that we are running some commands

slot kannada meaning ERR CROSSSLOT Keys in request don't hash to the same slot within 'MULTI' > EXPIRE user

texas 77 slot CROSSSLOT Keys in request don't hash to the same slot 可能原因：Redis集群架构直连模式不支持跨Slot执行涉及多Key的命令，例如DEL、MSET、MGET等。