Struct QuickCacheBackend 

pub struct QuickCacheBackend { /* private fields */ }

Implementations

impl QuickCacheBackend

pub fn with_capacity(capacity: usize) -> Self

Create a backend holding up to capacity bytes of weighted entries (weight = key footprint + declared size), sharded per recommended_cache_shards.

Trait Implementations

impl CacheBackend for QuickCacheBackend

fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 InternalCacheKey, _codec: Option<CacheCodec>, ) -> Pin<Box<dyn Future<Output = Option<CacheEntry>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Look up an entry by its key.

fn insert<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 InternalCacheKey, entry: CacheEntry, size_bytes: usize, _codec: Option<CacheCodec>, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Store an entry. size_bytes is used for eviction accounting.

fn get_or_insert<'a, 'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 InternalCacheKey, loader: Pin<Box<dyn Future<Output = Result<(CacheEntry, usize)>> + Send + 'a>>, _codec: Option<CacheCodec>, ) -> Pin<Box<dyn Future<Output = Result<(CacheEntry, bool)>> + Send + 'async_trait>>

where Self: 'async_trait, 'a: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Get an existing entry or compute it from loader.

fn clear<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Remove all entries.

fn num_entries<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = usize> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Number of entries currently stored (may flush pending operations).

fn size_bytes<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = usize> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

Total weighted size in bytes of all stored entries (may flush pending operations).

fn approx_num_entries(&self) -> usize

Approximate number of entries, callable from synchronous contexts. Backends that cannot provide this cheaply should return 0.

fn approx_size_bytes(&self) -> usize

Approximate weighted size in bytes, callable from synchronous contexts. Used by DeepSizeOf to report cache memory usage. Backends that cannot provide this cheaply should return 0.

impl Debug for QuickCacheBackend

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.