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SCARD

SCARD key

Available since 1.0.0.

Time complexity: O(1)

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

Return value

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

Examples

redis> SADD myset "Hello" (integer) 1 redis> SADD myset "World" (integer) 1 redis> SCARD myset (integer) 2

© 2009–2018 Salvatore Sanfilippo
Licensed under the Creative Commons Attribution-ShareAlike License 4.0.
https://redis.io/commands/scard