SADD

SADD key member

Available since

1.0.0

Time complexity

O(1) for each element added, so O(N) to add N elements when the command is called with multiple arguments.

ACL categories

@write, @set, @fast

Add the specified members to the set stored at key. Specified members that are already a member of this set are ignored. If key does not exist, a new set is created before adding the specified members.

An error is returned when the value stored at key is not a set.

Examples #

SADD myset "Hello"
SADD myset "World"
SADD myset "World"
SMEMBERS myset

History #

2.4.0

Accepts multiple `member` arguments.