Genealogy study claims first conclusive case of sex ‘distortion’ in humans — but not all researchers are convinced.
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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.
当前，“新质生产力”成为发展热词。习近平总书记叮嘱：“新质生产力，是否就等于新兴产业？传统产业改造升级，也能发展新质生产力。不能光盯着‘新三样’，不能大呼隆、一哄而起、一哄而散，一定要因地制宜，各有千秋。”这番重要论述，说的也是“适配度”。
Joe FayTechnology Reporter