Since cloudflare is already sponsoring it, I do wonder how much of this type of service can be implemented all on cloudflare. Their stack could be great for tile serving.
I’m also surprised to see nginx and hetzner in this project. Why not entirely Cloudflare: workers, R2, and cache
You can get cheap dedicated server on Hetzner with unlimited bandwidth, would the cost be similar with CF?
You can run containers now on CF, I think this was one of the last barriers that might have prevented a lot of software being migrated without a re-architecting.