Module response 

Cacheable response types and traits.

This module provides types for working with cacheable responses:

• CacheableResponse - Trait for types that can be cached
• CacheState - Freshness state of cached data
• ResponseCachePolicy - Type alias for response cache decisions

CacheableResponse Trait

The CacheableResponse trait defines how response types are converted to and from their cached representation. This allows responses to be stored efficiently in cache backends.

Cache States

Cached data can be in three states:

• CacheState::Actual - Data is fresh and valid
• CacheState::Stale - Data is usable but should be refreshed
• CacheState::Expired - Data is no longer valid

Result Handling

This module provides a blanket implementation of CacheableResponse for Result<T, E> where T: CacheableResponse. This allows error responses to pass through uncached while successful responses are cached.

Enums

CacheState

Freshness state of cached data.

Traits

CacheableResponse

Trait for response types that can be cached.

Type Aliases

ResponseCachePolicy

Cache policy for responses.