Draft: Patch mget in Redis::Cluster for cross-slot safety and efficiency

What are the limitations of a Redis cluster? crossslot keys in request don't hash to the same slot {code:0, message:CROSSSLOT Keys in request don't hash to the same slot, stacktrace:ReplyError: CROSSSLOT Keys in request don't in door mail slot don't hash to the same slot error, you may be attempting to access keys that do not belong to the same slot in a Cluster mode cache As a reminder

mental slot game {code:0, message:CROSSSLOT Keys in request don't hash to the same slot, stacktrace:ReplyError: CROSSSLOT Keys in request don't