How Redis Cluster Maintains Availability while Re-Sharding

Redis Cluster does not use consistent hashing but a different form of data split with every key being a part of what is called a hash slot

Redis Cluster uses a hash slot-based partitioning scheme to distribute data evenly across the nodes Each key is assigned to one of the 16,384

redis crossslot keys in request don''t hash to the same slot Redis Cluster doesn't use consistent hashing to do the distribution job Instead, it uses the hash slots Each cluster has 16384 hash slots that

redis slot hash slot Redis assigns keys to nodes by calculating the hash slot like this: Copy CRC16 mod 16384 CRC16 is a hashing function (