SCARD
Syntax
SCARD key
- Available since:
- Redis Open Source 1.0.0
- Time complexity:
- O(1)
- ACL categories:
-
@read,@set,@fast,
Returns the set cardinality (number of elements) of the set stored at key.
Examples
Return information
Integer reply: the cardinality (number of elements) of the set, or
0 if the key does not exist.