Redis & the infamous Waiting for the cluster to join message

Redis & the infamous Waiting for the cluster to join message redis slot slot Multi-key operations executed on a Redis cluster cannot work if keys belong to different hash slots But, you redis crossslot keys in request don''t hash to the same slot Redis cluster terminology Called a hash slot, it is the key's CRC16 hash value and then a computation of a modulo using 16384 The specific algorithm used

redis crossslot keys in request don''t hash to the same slot CLUSTER SLOTS returns details about which cluster slots map to which Redis instances The command is suitable to be used by Redis Cluster client libraries

redis hash slot As a side effect of the command execution, the node may go into down state because not all hash slots are covered Usage in Redis Cluster This command only A Redis Cluster is divided into 16384 hash slots, and a deterministic formula is used to derive the key to hash slot mapping, [ CRC16