Module backend 

Pluggable L2 cache backend interfaces and built-in implementations.

A backend is scoped by BackendKeyspace, which Sassi constructs from crate::punnu::PunnuConfig::namespace and crate::Cacheable::cache_type_name. Backend implementations must treat that keyspace as the only namespace/type source of truth.

Structs

BackendKeyspace

Namespace/type scope for backend storage and invalidation channels.

FileBackend

File-backed cache backend.

MemoryBackend

Separate in-memory backend that stores wire-envelope bytes.

Enums

BackendInvalidation

Backend-driven invalidation message.

Traits

CacheBackend

L2 cache backend for a single Cacheable payload type.

Type Aliases

BackendInvalidationStream

Stream type used by CacheBackend::invalidation_stream.