SADD

Syntax
SADD key member [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

RESP2/RESP3 Reply

Integer reply: the number of elements that were added to the set, not including all the elements already present in the set.

History

  • Starting with Redis version 2.4.0: Accepts multiple member arguments.
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