Why can't some Redis instances use the KEYS command?

CROSSSLOT Keys in request don't hash to the same slot ERR READONLY you can't No way to dispatch this command to Redis Cluster because keys have different

redis集群报错CROSSSLOT Keys in request don't hash to the same slot，先上结果：$redis->sDiffStore('live_room:robots:data:'

redisexceptionsresponseerror_ crossslot keys in request don''t hash to the same slot This will work reliably only if we have a single client performing the operation in a given time If multiple clients try to increment the key at about the same

redis slot When we try to run the script on a Redis Cluster, it will return this error: ERR CROSSSLOT Keys in request don't hash to the same slot At