Caching
Do caches work on Windows runners?
Quick answer
Yes, but path separators and case sensitivity differ, so keys and paths need Windows-specific handling.
The detail that matters
Include runner.os in the key. Restoring a Linux cache onto Windows fails in ways that are hard to read.
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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.