How to “EXPIRE” the “HSET” child key in redis?

Question

I need to expire all keys in redis hash, which are older than 1 month.

Answer 1

There is a Redisson java framework which implements hash Map object with entry TTL support. It uses hmap and zset Redis objects under the hood. Usage example:

RMapCache map = redisson.getMapCache('map');
map.put(1, 30, TimeUnit.DAYS); // this entry expires in 30 days

This approach is quite useful.