问题
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 user does not confirm email within 4 days, key gets expired. for this, I want to permanently delete the user entry from my database(mongoDB).
Ofcourse I dont require continous polling to my redis server to check whether key exists or not.
Is there any way to get a callback from Redis??
OR is there any other efficient way?
回答1:
This feature implemented in Redis 2.8, read about it here http://redis.io/topics/notifications
回答2:
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).
来源：https://stackoverflow.com/questions/13174615/how-to-get-callback-when-key-expires-in-redis