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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.，这一点在旺商聊官方下载中也有详细论述
"I'd rather take a hard, clear action now and build from a position we believe in than manage a slow reduction of people toward the same outcome," he wrote.，推荐阅读搜狗输入法2026获取更多信息
The kernel is the shared surfaceWhen any code runs on Linux, it interacts with the hardware through the kernel via system calls. The Linux kernel exposes roughly 340 syscalls, and the kernel implementation is tens of millions of lines of C code. Every syscall is an entry point into that codebase.
// 计算天数：栈非空→栈顶索引-当前索引；栈空→0（易错点3：索引差别写反）