Module cache 

Authoritative SWR cache — types and configuration.

Layers

• mod.rs — CacheKey, CacheEntry<T>, CacheConfig, Freshness.
• store.rs — CacheStore: in-memory LRU + redb disk backend.
• invalidation.rs — mutation-triggered invalidation helpers.
• capability.rs — stub placeholder for the capability cache (task 20).

OCP

• Add a new cached resource: add a CacheKey variant + one arm in serialize_key. Nothing else changes.
• Add a new validation gate: add one Option arg to store::get and one check at the top of the function. Existing call sites are unaffected.
• Swap the KV backend: replace the redb-specific code inside CacheStore without touching any caller.

Re-exports

pub use capability::CapabilityCache;

pub use capability::CapabilityClass;

pub use capability::CapabilityHandle;

pub use capability::CapabilityMap;

pub use capability::CapabilityRecord;

pub use capability::ClearScope;

Modules

capability

Capability classification cache.

invalidation

Mutation-triggered invalidation helpers.

store

CacheStore — in-memory LRU + redb disk-backed cache.

Structs

CacheConfig

Runtime-configurable cache parameters.

CacheEntry

A cached value together with its validity metadata.

CacheRead

Return type of CacheStore::get: value + freshness classification.

Enums

CacheKey

Discriminated key for every entity the cache can hold.

Freshness

Freshness classification returned by CacheStore::get.