TL;DRWe reverse engineered GitHub Actions cache internals to transparently route cache requests through our faster, colocated cache. This delivered up to 10x faster cache performance for some of our customers, with no code changes required and no need to maintain forks of upstream actions.Before this work began, we already had a faster alternative to Github Actions cache. Our approach was different: we forked each of the popular first-party actions that depended on Actions cache to point to our ...