Spring Redis - Indexes not deleted after main entry expires

Question

I am saving new entries with a Spring Data Repository. I have a TTL of 10 seconds for each entry.

When I save an entry with indexes, here is what i get in Redis

Answer 1

No key/values will be deleted automatically if you don't set Expiration Time.

So to automatically delete a data you have to set Expiration Time.

redis> SET mykey "Hello"
"OK"
redis> EXPIRE mykey 10
(integer) 1

Ref : https://redis.io/commands/expire

Below is the Spring code snippet to add a data to redis and set expiration time

@Component
public class RedisUtil {
    @Autowired
    private RedisTemplate template;

    @Resource(name = "redisTemplate")
    ValueOperations ops;

    public boolean addValue(String key, String value) {

        if (template.hasKey(Constants.REDIS_KEY_PREFIX + key)) {
            // key is already there
            return false;
        } else {
            ops.set(Constants.REDIS_KEY_PREFIX + key, value);
            template.expireAt(Constants.REDIS_KEY_PREFIX + key, 10);
        }
        return true;
    }
}