redis hash slot served_mob64ca12f3496a的技术博客

The single key or multi-key operation must belong to the same hash slot of the shard By default, replica nodes with cluster mode turned on redirect all read

The Redis cluster has 16384 hash slots Each key is checked modulo 16384 after CRC16 verification to determine which slot to place Each node in the cluster is

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

redis hash slot Redis Cluster uses consistent hashing and divides the data into 16384 hash slots Each key is assigned to a specific slot using a hash function