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# Redis Expire Command [!(#) Redis Keys](#) The Redis Expire command sets the expiration time for a key. After expiration, the key becomes unavailable. The time unit is seconds. ### Syntax The basic syntax of the Redis Expire command is as follows: redis 127.0.0.1:6379> Expire KEY_NAME TIME_IN_SECONDS ### Available Versions >= 1.0.0 ### Return Value Returns 1 if the operation succeeds. Returns 0 if the key does not exist or if the expiration time cannot be set for the key (for example, when attempting to update the expiration time of a key in Redis versions earlier than 2.1.3). ### Example First, create a key and assign a value: redis 127.0.0.1:6379> SET runooobkey redis OK Set an expiration time for the key: redis 127.0.0.1:6379> EXPIRE runooobkey 60(integer) 1 In the above example, we set the expiration time for the key `runooobkey` to 1 minute; after 1 minute, this key will be automatically deleted. [!(#) Redis Keys](#)