The downloads are cached. The build happens on every publish for every CI build.

realityking · 2025-01-27T23:30:30 1738020630

Most packages don‘t publish every CI build. Some packages, such as Typescript, publish a nightly build once a day. Even then a longer compression time dosen‘t seem too bad.

swiftcoder · 2025-01-28T09:03:18 1738054998

Caching downloads on a CDN helps offload work from the main server, it doesn't meaningfully change the bandwidth picture from the client's perspective.