Just gonna bulk load all those manifests into the db, and then that should make most loads notably faster by removing the net request! 🤞
We'll still load manifests inline sometimes, but only the first time anyone pulls up the layer in impress-2020. After that, it should be cached forever!
I noticed that, while looking up zone data from the db is near instant when you're on the same box, it's like 300ms here!
In this change, we start downloading zone data into the build process. That way, we can have a very fast and practically-up-to-date cache (I'm not sure I've changed it in many years), while being confident that it's in sync with the database source of truth (for things like join queries).
