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TTL
Josh Baker edited this page Oct 10, 2016
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Returns the remaining time to live of a key that has a timeout. This introspection capability allows a Redis client to check how many seconds a given key will continue to be part of the dataset.
See also the PTTL command that returns the same information with milliseconds resolution.
Integer reply: TTL in seconds, or a negative value in order to signal an error:
- -2 if the key does not exist.
- -1 if the key exists but has no associated expire.
redis> SET mykey "Hello"
OK
redis> EXPIRE mykey 10
(integer) 1
redis> TTL mykey
(integer) 10