Guardian Australia can also reveal that concerns about the vehicles being used by Management and Training Corporation (MTC) had prompted an intervention by the department of home affairs and warnings from almost 500 detention centre staff.
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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Why are fewer people donating their organs?
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Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10150-1，更多细节参见旺商聊官方下载