Is it possible to get a callback when a key expires in redis?

Question

Redis

I use the redis
library What I wanted to do is write the key data to the database at the expiration of the lifetime.
Tyk as I have a bot and every time after the user's command to change the values ​​​​in the database is like this.

Right off the bat, 2 questions:
1) What will happen if the same key is given new data and set a new lifetime?
Does Redis treat this as an expiration and notify me?
2) Maybe there are some pitfalls that I don't know about?
If yes, can you suggest other options?

Answer 1

You can
https://redis.io/topics/notifications