Struct ClockCache 

pub struct ClockCache<K, V>
where
    K: Eq + Hash,
{ /* private fields */ }

Concurrent fixed-size Clock cache.

Maintains a mapping from keys → slot indices and uses a clock-hand eviction policy.

Implementations

impl<K, V> ClockCache<K, V>

where K: Eq + Hash,

pub fn new( capacity: usize, backoff_config: BackoffConfig, metrics_config: MetricsConfig, ) -> Self

Create a new Clock cache with the given capacity.

Trait Implementations

impl<K, V> CacheEngine<K, V> for ClockCache<K, V>

where K: Eq + Hash,

fn get<Q>(&self, key: &Q) -> Option<Ref<K, V>>

where Key<K>: Borrow<Q>, Q: Eq + Hash + ?Sized,

Get a value by key.

Returns a Handler that pins the entry in memory.

fn insert_with<F>( &self, key: K, value: V, expired_at: Option<Instant>, admission: F, )

where F: Fn(&K, &K) -> bool,

Inserts a key-value pair with a custom admission policy.

fn remove<Q>(&self, key: &Q) -> bool

where Key<K>: Borrow<Q>, Q: Eq + Hash + ?Sized,

Removes an entry from the cache.

fn capacity(&self) -> usize

Returns the total number of slots allocated for the cache.

fn metrics(&self) -> MetricsSnapshot

Returns a snapshot of internal cache statistics.

fn insert(&self, key: K, value: V, expired_at: Option<Instant>)

Inserts a key-value pair into the cache.

impl<K, V> Drop for ClockCache<K, V>

where K: Eq + Hash,

fn drop(&mut self)

Executes the destructor for this type.