mbx-cache-core 0.4.0

Protocol and storage primitives for mbx build caches.

This crate contains the types shared by cache clients, the task-scoped cache agent, and remote cache implementations. Protocol records are serialized with [canonical_json] before hashing; changing their shape is therefore a wire-format change, not merely an implementation detail.

Most consumers start with [CacheDigest] and the local stores [LocalCas] and [LocalActionCache]. Remote clients use [RemoteCacheClient], while mbx's compiler shim communicates with a [CacheAgent] using [AgentRequest] and [AgentResponse].

use mbx_cache_core::{CacheDigest, canonical_json};
use serde::Serialize;

#[derive(Serialize)]
struct Key<'a> {
    compiler: &'a str,
    source: CacheDigest,
}

let source = CacheDigest::blake3(b"fn main() {}\n");
let bytes = canonical_json(&Key { compiler: "rustc", source })?;
let action = CacheDigest::blake3(&bytes);
assert_eq!(action.algorithm, "blake3");
# Ok::<(), eyre::Report>(())