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.
As the United States enters day four of Operation Epic Fury—its sweeping military campaign against Iran, launched in partnership with Israel—the financial toll on American taxpayers is beginning to come into focus to budget watchers in the Beltway and academia. According to Kent Smetters, director of the Penn Wharton Budget Model (PWBM) and one of the nation’s foremost fiscal analysts, the total economic cost of the strikes could reach as high as $210 billion.。关于这个话题，heLLoword翻译官方下载提供了深入分析
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