Redis Scard Command

Redis Sets (Set)

The Redis scard command returns the number of elements in the set.

Syntax

The basic syntax of the redis scard command is as follows:

redis　127.0.0.1:6379>　SCARD　KEY_NAME

Available version

>= 1.0.0

Return value

The number of elements in the set. Returns 0 when the set key does not exist.

Online Examples

redis　127.0.0.1:6379>　SADD　myset　"hello"
(integer)　1
redis　127.0.0.1:6379>　SADD　myset　"foo"
(integer)　1
redis　127.0.0.1:6379>　SADD　myset　"hello"
(integer)　0
redis　127.0.0.1:6379>　SCARD　myset
(integer)　2

Redis Sets (Set)