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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.
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据了解，宝马此举也借鉴了美国斯帕坦堡工厂的成功经验——当地试点的人形机器人，曾在10个月内支撑3万辆宝马X3的生产，每周一至周五每天工作十小时。完成9万次零部件精准搬运，持续运行1250小时。
「为无思考消费做无思考设计的日子已经结束。」我多年前这样写过。遗憾的是，这个愿望至今仍未实现。我把这个愿望传递给你：做得更少，但做得更好。，更多细节参见51吃瓜