Redis Cluster通过hash slot映射数据 - 稀土掘金

One shard can contain many hash slots, and a hash slot contains many keys The total number of hash slots in a database is always 16384

The CLUSTER SETSLOT command is an important piece used by Redis Cluster in order to migrate all the keys contained in one hash slot from one node to another

redis slot Redis supports multi-key commands in Cluster Mode, such as Set type unions or intersections, mset and mget, as long as the keys all hash to the same slot By

redis hash slot hash slot Every node in a Redis Cluster is responsible for a subset of the hash slots, so for example you may have a cluster with 3 nodes, where: Node A