How to make an expiration on an individual list item in Redis?

Question

Redis

I am writing a program on Redis + Nodejs, it is necessary to implement the expiration of list members after some time N. (Added via sadd). How to do it on redis?

Answer 1

No way. Expiration can only be set for a key. But you can do the following. Instead of set, use sorted set, and in it, as score, use the timestamp of the time until which the element must exist. Next, just periodically remove all elements with a score value from 0 up to the current time. Well, when reading, make sure that the result does not include elements whose score is already less than the current timestamp.