SPOP – Redis

始于1.0.0可用。

时间复杂度： O(1)

Removes and returns a random element from the set value stored at key.

This operation is similar to SRANDMEMBER, that returns a random element from a set but does not remove it.

返回值

Bulk string reply: the removed element, or nil when key does not exist.

redis> SADD myset "one"

(integer) 1

redis> SADD myset "two"

(integer) 1

redis> SADD myset "three"

(integer) 1

redis> SPOP myset

"one"

redis> SMEMBERS myset

1) "three"
2) "two"