Caching
Do caches carry across branches?
Quick answer
A branch can read caches from itself and from its base branch, but not from unrelated branches.
The detail that matters
This is why the first CI run on a new feature branch is fast if main's cache is warm, and cold if it is not.
Your next build could be twice as fast, at half the price
Start free. Migrating away is the same one line, and we publish that diff too.
Related
Why does Cargo rebuild everything?Your cache key changes on every run, or target/ is not cached at all.Why is cache restore slow?GitHub throttles cache bandwidth, so a multi-gigabyte cache can take minutes to restore.How do I write a good cache key?Hash exactly the files that determine the cached content — usually the lockfile — and nothing else.What are restore-keys?Ordered prefixes tried when the exact cache key misses, so a partial match can still be restored.