Struct MultiLayerCache 

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

A read-through, write-through composition of an L1 and L2 cache.

L1 is typically crate::memory::MemoryCache or [crate::moka_cache::MokaL1]; L2 is typically a distributed cache such as a Redis backend. Order of layers fixed: L1 is consulted first.

Implementations

impl<L1, L2> MultiLayerCache<L1, L2>

where L1: Cache, L2: Cache,

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

Builds a two-layer cache with L1-backfill enabled.

pub fn without_l1_backfill(self) -> Self

Disables L1 backfill-on-read.

pub fn l1(&self) -> &L1

Returns a reference to the L1 layer.

pub fn l2(&self) -> &L2

Returns a reference to the L2 layer.

Trait Implementations

impl<L1, L2> Cache for MultiLayerCache<L1, L2>

where L1: Cache, L2: Cache,

fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<Vec<u8>>, CacheError>> + Send + 'async_trait>>

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

Fetches a value by key. None indicates a miss.

fn set<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, value: Vec<u8>, ttl: Option<Duration>, ) -> Pin<Box<dyn Future<Output = Result<(), CacheError>> + Send + 'async_trait>>

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

Stores a value under key, optionally expiring after ttl.

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,

Removes a key.

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

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

Removes all entries.

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

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.