SCARD
Syntax
SCARD key
- Available since:
- 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
RESP2 Reply
Integer reply: the cardinality (number of elements) of the set, or0
if the key does not exist.