Save the precious build minutes! Reusing build outputs with Git Tree Hash 🌳

Save the precious build minutes! Reusing build outputs with Git Tree Hash 🌳 Abstract: Do you spend a lot of time (and perhaps money) waiting for builds on the master branch, even though its contents are identical to the commit before you clicked that Merge Pull Request button? You may save time by caching your build output, using a Git Tree Hash (not to be confused with Commit Hash) as a cache ke

[Kesin]

git rev-parse HEAD:でtreeのhashを得られるのは知らなかった。たしかにこの値でビルドやテストの結果をキャッシュしてしまえば中身が変わらない限り前の結果を使い回しても問題ないわけだ。Bazelと同じ考え方