redis-getsetnx v1.0.4

This package is a Redis Lua command, to be used with redis-require.

Install it with npm install redis-getsetnx.

GETSETNX key value

Time complexity: O(1)

Idempotently, atomically sets key to value if key does not have a different value already. Returns the value stored at key. If the set succeeded or key was already set to value, the return value will be value. Returns an error when key exists but does not hold a string value.

Return value

Bulk string reply: the value now stored at key.