Let’s use Jedis, a popular Java client for Redis. You can add keys that expire by using the pexpire
(with time in milliseconds) or expire
(with time in seconds) commands.
Here's an example of setting a key with an expiration time:
import redis.clients.jedis.Jedis; Jedis jedis = new Jedis('localhost'); jedis.set('key', 'value'); jedis.expire('key', 60); // The key will be deleted after 60 seconds
And here's another example using pexpire
:
import redis.clients.jedis.Jedis; Jedis jedis = new Jedis('localhost'); jedis.set('key', 'value'); jedis.pexpire('key', 60000); // The key will be deleted after 60000 milliseconds (60 seconds)
Q: What happens if I try to access a key after its set expiration time?
A: If a key is accessed after its set expiration time, Redis would have already automatically deleted it. Therefore, it will appear as if the key does not exist.
Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.