I ran into a similar issue and used a hashset of all the related keys with ttls on the individual keys. the hashset would expire making the keys unreachable, an

I ran into a similar issue and used a hashset of all the related keys with ttls on the individual keys. the hashset would expire making the keys unreachable, and the TTls basically garbages collects the individual keys. anything that required to transact with the set would do so atomically by being wrapped in a lua script.