LPUSHX key value

Inserts value at the head of the list stored at key, only if key already exists and holds a list. In contrary to LPUSH, no operation will be performed when key does not yet exist.

Return value

Integer reply: the length of the list after the push operation.


redis> LPUSH mylist "World" (integer) 1 redis> LPUSHX mylist "Hello" (integer) 2 redis> LPUSHX myotherlist "Hello" (integer) 0 redis> LRANGE mylist 0 -1 1) "Hello" 2) "World" redis> LRANGE myotherlist 0 -1 (empty list or set)

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