Struct MultiTierBackend 

pub struct MultiTierBackend<L1, L2> { /* private fields */ }

Multi-tier cache backend combining fast L1 and persistent L2.

The multi-tier backend automatically promotes frequently accessed entries from L2 to L1 based on the configured promotion strategy.

Implementations

impl<L1, L2> MultiTierBackend<L1, L2>

where L1: CacheBackend, L2: CacheBackend,

pub fn new(l1: L1, l2: L2) -> Self

Creates a new multi-tier backend with default configuration.

pub fn builder() -> MultiTierBuilder<L1, L2>

Creates a builder for configuring the multi-tier backend.

pub fn l1(&self) -> &L1

Returns a reference to the L1 backend.

pub fn l2(&self) -> &L2

Returns a reference to the L2 backend.

pub fn stats(&self) -> &TierStats

Returns a reference to the current tier statistics.

Trait Implementations

impl<L1, L2> CacheBackend for MultiTierBackend<L1, L2>

where L1: CacheBackend, L2: CacheBackend,

fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<CacheRead>, CacheError>> + Send + 'async_trait>>

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

Fetches a cached entry by key.

fn set<'life0, 'async_trait>( &'life0 self, key: String, entry: CacheEntry, ttl: Duration, stale_for: Duration, ) -> Pin<Box<dyn Future<Output = Result<(), CacheError>> + Send + 'async_trait>>

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

Stores an entry with a time-to-live and additional stale window.

fn invalidate<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<(), CacheError>> + Send + 'async_trait>>

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

Invalidates the cache entry for key, if present.

fn get_keys_by_tag<'life0, 'life1, 'async_trait>( &'life0 self, tag: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Vec<String>, CacheError>> + Send + 'async_trait>>

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

Retrieves all cache keys associated with a tag.

fn invalidate_by_tag<'life0, 'life1, 'async_trait>( &'life0 self, tag: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<usize, CacheError>> + Send + 'async_trait>>

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

Invalidates all cache entries associated with a tag.

fn list_tags<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<Vec<String>, CacheError>> + Send + 'async_trait>>

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

Lists all currently indexed tags.

fn invalidate_by_tags<'life0, 'life1, 'async_trait>( &'life0 self, tags: &'life1 [String], ) -> Pin<Box<dyn Future<Output = Result<usize, CacheError>> + Send + 'async_trait>>

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

Invalidates all cache entries associated with multiple tags.

impl<L1: Clone, L2: Clone> Clone for MultiTierBackend<L1, L2>

fn clone(&self) -> MultiTierBackend<L1, L2>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.