Struct MokaCacheBackend 

pub struct MokaCacheBackend { /* private fields */ }

Default CacheBackend backed by a moka cache.

Provides weighted-capacity eviction and concurrent-load deduplication via moka’s built-in optionally_get_with.

Implementations

impl MokaCacheBackend

pub fn with_capacity(capacity: usize) -> Self

pub fn no_cache() -> Self

pub fn capacity(&self) -> usize

Configured weighted capacity in bytes.

Trait Implementations

impl CacheBackend for MokaCacheBackend

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 as a DeepSizeOf fallback when exact entry traversal is unavailable. Backends that cannot provide this cheaply should return 0.

fn deep_size_of_entries( &self, context: &mut Context, size_of_entry: &dyn Fn(&CacheEntry, &mut Context) -> Option<usize>, ) -> Option<usize>

Computes the size of the entries currently held in memory.

impl Debug for MokaCacheBackend

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

Formats the value using the given formatter.