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rpushx

RPUSHX

RPUSHX key value

Available since 2.2.0.

Time complexity: O(1)

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

Return value

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

Examples

redis> RPUSH mylist "Hello" (integer) 1 redis> RPUSHX mylist "World" (int