CLUSTER

CLUSTER ADDSLOTSRANGE

CLUSTER ADDSLOTSRANGE start-slot end-slot [start-slot end-slot ...]

Available since:

7.0.0

Time complexity:

O(N) where N is the total number of the slots between the start slot and end slot arguments.

ACL categories:

@admin, @slow, @dangerous,

The CLUSTER ADDSLOTSRANGE is similar to the CLUSTER ADDSLOTS command in that they both assign hash slots to nodes.

The difference between the two commands is that ADDSLOTS takes a list of slots to assign to the node, while ADDSLOTSRANGE takes a list of slot ranges (specified by start and end slots) to assign to the node.

Example

To assign slots 1 2 3 4 5 to the node, the ADDSLOTS command is:

> CLUSTER ADDSLOTS 1 2 3 4 5
OK

The same operation can be completed with the following ADDSLOTSRANGE command:

> CLUSTER ADDSLOTSRANGE 1 5
OK

Usage in Redis Cluster

This command only works in cluster mode and is useful in the following Redis Cluster operations:

1. To create a new cluster ADDSLOTSRANGE is used in order to initially setup master nodes splitting the available hash slots among them.
2. In order to fix a broken cluster where certain slots are unassigned.

Return

Simple string reply: OK if the command was successful. Otherwise an error is returned.