Built on a shared FastConformer encoder (Conv2d 8x subsampling → N Conformer blocks with relative positional attention):
限制：数据范围不能太大，否则空间浪费，这一点在heLLoword翻译官方下载中也有详细论述
→ 0x686 (RETF_OUTER_LEV)。爱思助手下载最新版本对此有专业解读
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.
"It's up to you to make that decision... and let's face it, it's a small price to pay getting your gallbladder out if you're going to lose pounds."