Available since: 1.0.0
Time complexity: O(1)
As of Redis version 6.2.0, this command is regarded as deprecated.
It can be replaced by
SET with the
GET argument when migrating or writing new code.
value and returns the old value stored at
Returns an error when
key exists but does not hold a string value. Any
previous time to live associated with the key is discarded on successful
GETSET can be used together with
INCR for counting with atomic reset.
For example: a process may call
INCR against the key
mycounter every time
some event occurs, but from time to time we need to get the value of the counter
and reset it to zero atomically.
This can be done using
GETSET mycounter "0":
Bulk string reply: the old value stored at
key did not exist.