How do I set expiration for keys in Redis?
You can set expiration for keys in Redis using the EXPIRE
command. For example, EXPIRE mykey 300
sets the key 'mykey' to expire in 300 seconds.
Can I check the remaining time before a key expires?
Yes, you can use the TTL
command to check the remaining time to live for a key. For example, TTL mykey
will return the number of seconds until 'mykey' expires.
What happens if I try to access a key after it has expired?
If you try to access a key after it has expired, Redis will return a nil value, indicating that the key no longer exists.
Are there any other commands related to key expiration?
Yes, besides EXPIRE
, you can use PEXPIRE
for milliseconds, EXPIREAT
to set an expiration at a specific timestamp, and PERSIST
to remove the expiration.
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