bzmpop.3valkey - Man Page
Removes and returns a member by score from one or more sorted sets. Blocks until a member is available otherwise. Deletes the sorted set if the last element was popped.
Synopsis
BZMPOP timeout numkeys key [key...] <MIN | MAX> [COUNT count]
Description
BZMPOP is the blocking variant of ZMPOP.
When any of the sorted sets contains elements, this command behaves exactly like ZMPOP. When used inside a MULTI/EXEC block, this command behaves exactly like ZMPOP. When all sorted sets are empty, Valkey will block the connection until another client adds members to one of the keys or until the timeout (a double value specifying the maximum number of seconds to block) elapses. A timeout of zero can be used to block indefinitely.
See ZMPOP for more information.
Reply
Resp2
One of the following:
- valkey-protocol(7) Nil reply: when no element could be popped.
- valkey-protocol(7) Array reply: a two-element array with the first element being the name of the key from which elements were popped, and the second element is an array of the popped elements. Every entry in the elements array is also an array that contains the member and its score.
Resp3
One of the following:
- valkey-protocol(7) Null reply: when no element could be popped.
- valkey-protocol(7) Array reply: a two-element array with the first element being the name of the key from which elements were popped, and the second element is an array of the popped elements. Every entry in the elements array is also an array that contains the member and its score.
Complexity
O(K) + O(M*log(N)) where K is the number of provided keys, N being the number of elements in the sorted set, and M being the number of elements popped.
Acl Categories
@blocking @slow @sortedset @write
History
- Available since: 7.0.0
See Also
bzpopmax(3valkey), bzpopmin(3valkey), zadd(3valkey), zcard(3valkey), zcount(3valkey), zdiff(3valkey), zdiffstore(3valkey), zincrby(3valkey), zinter(3valkey), zintercard(3valkey), zinterstore(3valkey), zlexcount(3valkey), zmpop(3valkey), zmscore(3valkey), zpopmax(3valkey), zpopmin(3valkey), zrandmember(3valkey), zrange(3valkey), zrangestore(3valkey), zrank(3valkey), zrem(3valkey), zremrangebylex(3valkey), zremrangebyrank(3valkey), zremrangebyscore(3valkey), zrevrank(3valkey), zscan(3valkey), zscore(3valkey), zunion(3valkey), zunionstore(3valkey)