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# Redis Blpop Command [!(#) Redis Lists](#) The Redis Blpop command removes and gets the first element from a list. If the list does not exist, it blocks the list until a timeout is reached or an element is found to pop. ### Syntax The basic syntax for the Redis Blpop command is as follows: redis 127.0.0.1:6379> BLPOP LIST1 LIST2 .. LISTN TIMEOUT ### Available Since >= 2.0.0 ### Return Value If the list is empty, it returns a nil. Otherwise, it returns a list containing two elements: the first element is the key of the popped element, and the second element is the value of the popped element. ### Example redis 127.0.0.1:6379> BLPOP list1 100 In the above example, the operation will be blocked. If the specified list key `list1` contains data, it will return the first element. Otherwise, it will return nil after waiting for 100 seconds. (nil)(100.06s) [!(#) Redis Lists](#)