No, this isn't another complaint topic. It would keep mac users from having to quit blockland, delete cache, join server, disconnect, repeat.
A clientsided script.
Whenever the client (you) disconnect from a server, it deletes their (your) cache.db. If you don't like the idea, meh. I just would like it. I know it might be bad for disconnecting/reconnecting, but it would be really helpful.