How to get callback when key expires in REDIS

Question

I\'m developing application using Bottle. In my registration form, I\'m confirming email by mail with a unique key. I\'m storing this key in REDIS with expiry of 4 days. If

Answer 1

There are no such callbacks in redis (not that I know of).

I would do it like this:

• when user signs up, put his id into a sorted set where the score is a timestamp (now + 4 days) and member is user id.
• have a periodic job that gets all records from that sorted set where timestamp is in the past.
• loop through those user ids and take actions (if he didn't confirm - delete all user's data).

Answer 2

This feature implemented in Redis 2.8, read about it here http://redis.io/topics/notifications