const cur = val; // 简化变量名，代表当前价格
36氪获悉，特锐德公告，公司已于2月26日向香港联交所递交了发行境外上市外资股（H股）股票并在香港联交所主板挂牌上市的申请，并于同日在香港联交所网站刊登了本次发行上市的申请资料。
。im钱包官方下载对此有专业解读
record equipment and very familiar to the banking industry, it took a few years
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.