Crate lora_snapshot 

Efficient snapshots for LoraDB graph state.

This crate is intentionally separate from lora-store and lora-wal: the store owns the canonical in-memory records, the WAL owns ordered mutation recovery, and this crate owns compact point-in-time state images.

The current format is column-oriented rather than serde-over-struct: nodes, labels, relationships, relationship types, and properties are stored in separate columns. That keeps the format friendly to future Arrow / Parquet backends while avoiding those heavy dependencies in the first implementation. Compression and authenticated encryption are applied to the encoded column body.

Layout:

• format — magic + format/version constants.
• codec — top-level encode_snapshot / decode_snapshot / write_snapshot / read_snapshot and SnapshotInfo.
• envelope, body, columnar, transform, view — the layered on-disk format implementation.
• errors, options — public vocabulary.

Structs

EncryptionKey

PasswordKdfParams

SnapshotInfo

SnapshotOptions

SnapshotPassword

SnapshotView

StringTableView

U32ColumnView

U64ColumnView

Enums

Compression

SnapshotCodecError

SnapshotEncryption

Constants

DATABASE_SNAPSHOT_MAGIC

Functions

decode_snapshot

encode_snapshot

encode_snapshot_with_options

open_snapshot_view

read_snapshot

snapshot_info

write_snapshot

Type Aliases

Result

SnapshotCredentials