Module async_lru_cache

Provides a least-recently-used cache with async access.

To operate, this cache is bound to an I/O back-end object that provides the loading and flushing of cache entries.

Also supports inter-cache dependency, e.g. for when the qcow2 L2 table cache needs to be flushed before the refblock cache, because some clusters were freed (so the L2 references need to be cleared before the clusters are deallocated).

Structs

AsyncLruCache 🔒

Least-recently-used cache with async access.

AsyncLruCacheEntry 🔒

Cache entry structure, wrapping the cached object.

AsyncLruCacheInner 🔒

Least-recently-used cache with async access.

Traits

AsyncLruCacheBackend 🔒

Provides loading and flushing for cache entries.

FlushableCache 🔒

Internal trait used to implement inter-cache flush dependencies.