@AyoubKaz07 thank you for submitting this PR! When I was reviewing it, I noticed we have already implemented a similar, fieldttl command that applies for both hashmaps and sets. We forgot to document it and it totally slipped my mind. Seems that HTTL duplicates the logic around this command. I believe if we document fieldttl we won't need HTTL anymore.

Noticed it too, i thought there was a reason why it wasn't documented and required another HTTL command.

@romange would like to take part and document fieldttl command, if you could point out where do i start

Sure, our docs are here: https://github.com/dragonflydb/documentation

fieldttl should be under https://github.com/dragonflydb/documentation/tree/main/docs/command-reference/generic
but I would also mention it in setex and hsetex pages.