LPUSHX key element [element ...]

Available since: 2.2.0

Time complexity: O(1) for each element added, so O(N) to add N elements when the command is called with multiple arguments.

ACL categories: @write @list @fast

Inserts specified values 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

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

Examples

LPUSH mylist "World" LPUSHX mylist "Hello" LPUSHX myotherlist "Hello" LRANGE mylist 0 -1 LRANGE myotherlist 0 -1

History

  • Starting with Redis version 4.0.0: Accepts multiple element arguments.
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