四步口诀：倒着来 → 弹 ≤ 当前的 → 栈顶即答案 → 当前入栈。
Git packfiles use delta compression, storing only the diff when a 10MB file changes by one line, while the objects table stores each version in full. A file modified 100 times takes about 1GB in Postgres versus maybe 50MB in a packfile. Postgres does TOAST and compress large values, but that’s compressing individual objects in isolation, not delta-compressing across versions the way packfiles do, so the storage overhead is real. A delta-compression layer that periodically repacks objects within Postgres, or offloads large blobs to S3 the way LFS does, is a natural next step. For most repositories it still won’t matter since the median repo is small and disk is cheap, and GitHub’s Spokes system made a similar trade-off years ago, storing three full uncompressed copies of every repository across data centres because redundancy and operational simplicity beat storage efficiency even at hundreds of exabytes.
，推荐阅读服务器推荐获取更多信息
「我展現了巔峰滑雪水準，完成前所未見的壯舉，這已然足夠出色。但還是要感謝大家。」
圖像加註文字，班德（右）在克林頓任內與卸任後都是他的主要助手——照片中，他在 2001 年克林頓卸任的第一天陪同在側愛潑斯坦文件中的電子郵件顯示，班德尋求麥克斯韋協助撮合人脈，有利於「克林頓全球倡議」。