go-deltasync documentation

Pure-Go, cgo-free building blocks for delta synchronization — move and store only the bytes that change between two versions of a file. Every tool is wire-compatible with its reference implementation, ships as a single static binary and an importable Go package, and is held to 100 % test coverage.

Tool	What it is	Interops with
zsync2	download only changed bytes over plain HTTP	zsync
rdiff	rsync signature / delta / patch	librsync
zchunk	content-defined chunked container + HTTP-Range delta	zchunk (Fedora/DNF)
vcdiff	VCDIFF (RFC 3284) delta encode/decode	xdelta3
bita	differential file sync over HTTP (.cba archives)	oll3/bita

Source for every tool lives at github.com/go-deltasync.