BLMOVE source destination LEFT|RIGHT LEFT|RIGHT timeout

BLMOVE is the blocking variant of LMOVE. When source contains elements, this command behaves exactly like LMOVE. When used inside a MULTI/EXEC block, this command behaves exactly like LMOVE. When source is empty, Redis will block the connection until another client pushes to it or until timeout (a double value specifying the maximum number of seconds to block) is reached. A timeout of zero can be used to block indefinitely.

This command comes in place of the now deprecated BRPOPLPUSH. Doing BLMOVE RIGHT LEFT is equivalent.

See LMOVE for more information.

*Return value

Bulk string reply: the element being popped from source and pushed to destination. If timeout is reached, a Null reply is returned.

*Pattern: Reliable queue

Please see the pattern description in the LMOVE documentation.

*Pattern: Circular list

Please see the pattern description in the LMOVE documentation.