what do we mean by hash slot in redis cluster?

what do we mean by hash slot in redis cluster? redis slot Therefore, commands that involve more than one key must assert all keys map to the exact same slot to avoid cross-slot errors A single cluster node serves only redisexceptionsresponseerror_ crossslot keys in request don''t hash to the same slot CLUSTER SLOTS Available since 0 CLUSTER SLOTS returns details about which cluster slots map to which Redis instances The command

redis slot A hash tag is defined with brackets a key that has a substring inside brackets will use that substring to determine in which hash slot the