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ZCARD

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.

Examples

ZADD myzset 1 "one"
ZADD myzset 2 "two"
ZCARD myzset

© 2006–2022 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/zcard/