Understanding Redis High-Availability Architectures

Redis Cluster redis crossslot keys in request don't hash to the same slot CROSSLOT errors: If you are experiencing the ERR CROSSLOT Keys in request don't hash to the same slot error, you may be attempting to access keys that do not redis slot This error message indicates that some of the keys in your request are mapped to different hash slots, which is preventing the operation from being executed

redis hash slot keys be in the same slot, otherwise an error message CROSSSLOT Keys in request don't hash to the same slot may occur When a shard is full, subscribe