[adityamaru]

Yeah that still holds true to some extent today with the GHA cache. Blacksmith colocates its cache with our CI runners, and ensures that they're in the same local network allowing us to saturate the NIC and provide much faster cache reads/writes. We're also thinking of clever ways to avoid downloading from a cache entirely and instead bind mount cache volumes over the network into the CI runner. Still early days, but stay tuned!

[notnmeyer]

there’s probably a cool consistent hashing solution where jobs are routed to a host that that is likely to have the cache stored locally already and can be mounted into the containers.