# Storage layer

The storage adapter owns `active.log`, `snapshot.bin`, the data-directory lock,
in-memory live/deleted state, synchronous PUT/DEL writes, startup replay, and
compaction. It uses Win32 64-bit file APIs and `FlushFileBuffers`.

The binary format is private but versioned. Invalid complete records are never
skipped; only an incomplete EOF record is truncated. Snapshot generation must
match the active log before snapshot state is trusted.