Redis Cluster 101

redis hash slot   Dan redis crossslot keys in request don''t hash to the same slot

Hash tags are a way to ensure that multiple keys are allocated in the same hash slot This is used in order to implement multi-key operations in Redis Cluster

Hash slots are defined by Redis so the data can be mapped to different nodes in the Redis cluster The number of slots can be Redis Cluster does not use consistent hashing, but a different form of sharding where every key is assigned to something called a hash slot

slot bkk Hash slots are defined by Redis so the data can be mapped to different nodes in the Redis cluster The number of slots can be But in this example we'll assume they are just ten, from 0 to 9 ;) Different nodes will hold a subset of hash slots A given key foo is at slot: slot = crc16