Lightweight VCS: Deterministic Git-Compatible Version Engine
Clean, zero-dependency version control core implementing deterministic content hashing and delta packfiles.
¶ 01Context & Design Rationale
“Building a version control engine demystifies the fundamental invariant of software development: code is a directed acyclic graph of immutable states.”
Lightweight VCS models tree differences using custom binary delta algorithms. It eschews bloat and focuses on pure POSIX file manipulation, streaming delta chunks through rolling checksum windows.
¶ 02Architectural Pipeline
SCALE: LOCAL REPOSITORY FILE SYSTEMINDEX SCAN
Stat Cache Invalidation
mtime & size verification
→
SHA-256 HASHER
Header + Blob Ingestion
Content Addressable
→
DELTA COMPRESS
Rolling Checksum Sliding Window
Zstandard / Deflate
→
DAG TRAVERSAL
Ancestry Verification
Atomic Ref Update