SCARD

Returns the number of members in a set.

Usage: SCARD key
Complexity: O(1)
Since: 1.0.0
ACL Categories: @fast, @read, @set
Command flags: READONLY, FAST

Returns the set cardinality (number of elements) of the set stored at key.

Examples

127.0.0.1:6379> SADD myset "Hello"
(integer) 1
127.0.0.1:6379> SADD myset "World"
(integer) 1
127.0.0.1:6379> SCARD myset
(integer) 2

Replies

RESP2

Integer reply: the cardinality (number of elements) of the set, or 0 if the key does not exist.

RESP3

Integer reply: the cardinality (number of elements) of the set, or 0 if the key does not exist.