Struct Cache 

pub struct Cache<K, V, E, R>
where
    K: Clone + Eq + Hash + Send + Sync + 'static,
    V: Clone + Send + Sync + 'static,
    E: Clone + Send + Sync + 'static,
    R: Send + 'static,
{ /* private fields */ }

Memoizing cache: one shared load per key in flight; optional TTL and LRU capacity.

Implementations

impl<K, V, E, R> Cache<K, V, E, R>

where K: Clone + Eq + Hash + Send + Sync + 'static, V: Clone + Send + Sync + 'static, E: Clone + Send + Sync + 'static, R: Send + 'static,

pub fn make<F>( capacity: usize, ttl: Option<Duration>, load: F, ) -> Effect<Self, Never, ()>

where F: Fn(K) -> Effect<V, E, R> + Send + Sync + 'static,

capacity == 0 disables LRU eviction (unbounded entries). ttl: None disables expiry.

pub fn get(&self, key: K) -> Effect<V, Cause<E>, R>

Look up key, coalescing concurrent misses on the same key.

pub fn invalidate(&self, key: K) -> Effect<(), Never, ()>

Drop a cached entry; interrupt any in-flight load for key so waiters observe an interrupt.

pub fn stats(&self) -> Effect<CacheStats, Never, ()>

Snapshot of counters.

Trait Implementations

impl<K, V, E, R> Clone for Cache<K, V, E, R>

where K: Clone + Eq + Hash + Send + Sync + 'static + Clone, V: Clone + Send + Sync + 'static + Clone, E: Clone + Send + Sync + 'static + Clone, R: Send + 'static + Clone,

fn clone(&self) -> Cache<K, V, E, R>

Returns a duplicate of the value.

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

Performs copy-assignment from source.