SPOP – Redis

Available since 1.0.0.

Time complexity: 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.

Return value

Bulk 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

"three"

redis> SMEMBERS myset

1) "two"
2) "one"