ZCARD
Syntax
ZCARD key
- Available since:
- 1.2.0
- Time complexity:
- O(1)
- ACL categories:
-
@read,@sortedset,@fast,
Returns the sorted set cardinality (number of elements) of the sorted set stored
at key.
Return
Integer reply: the cardinality (number of elements) of the sorted set, or 0
if key does not exist.