Crate hd_cas 

hd-cas

Content-addressable store for hyperdocker.

This crate provides a BLAKE3-hashed, content-defined chunked storage system. Files are split into variable-size chunks using FastCDC, hashed with BLAKE3, and stored with optional zstd compression. Identical content is automatically deduplicated across environments.

Key Types

• ContentHash - A 256-bit BLAKE3 content hash
• ContentStore - On-disk content-addressable store
• Manifest - File manifest (ordered list of chunk hashes)
• GarbageCollector - Reference-counting garbage collector

Example

use hd_cas::{ContentStore, ContentHash};
use std::path::Path;

let store = ContentStore::open(Path::new("/tmp/cas")).unwrap();
let hash = store.put_file(Path::new("myfile.txt")).unwrap();
store.get_file(&hash, Path::new("recovered.txt")).unwrap();

Re-exports

pub use hash::ContentHash;

pub use manifest::Manifest;

pub use store::ContentStore;

pub use gc::GarbageCollector;

pub use gc::GcStats;

Modules

chunk

gc

hash

manifest

store