Lua Cache Changes and FastDL

I know that if you have FastDL you have to update the server’s cache every time you change something, yet I have seen many servers that use FastDL, yet change the map/gamemode all the time(Primarily TTT and Fretta.)! How do they manage this? Thanks for whatever help I get!

Edit: Crap. I put LUA in the title instead of DUA.

You get the cache files from every fretta gamemode by playing it all once. So just open the server, play every gamemode. Shut down server, get the caches. That is what I did as I own a fretta server.

Thanks for the help. I’ll try that right now.