Cookie-based system to track your activity across clicks
Graphing — Axes, NumberPlane, FunctionGraph, ParametricFunction, VectorField, BarChart，这一点在91视频中也有详细论述
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.，更多细节参见im钱包官方下载
Store design migration
第十六条 行政执法监督机构可以采取问卷调查、个别访谈、实地调研等方式，对行政执法机关执行法律法规情况进行评估。