ZPOPMIN

ZPOPMIN key [count]

#Example

redis> ZADD myzset 1 "one"
(integer) 1
redis> ZADD myzset 2 "two"
(integer) 1
redis> ZADD myzset 3 "three"
(integer) 1
redis> ZPOPMIN myzset
1) "one"
2) "1"

Remove and return members with the lowest scores in a sorted set