Struct StatCache 

pub struct StatCache<K: Hash + Eq + Clone, V: Clone> {
    pub inner: SimpleLruCache<K, V>,
    pub hits: u64,
    pub misses: u64,
}

A counted-access cache that tracks hit and miss statistics.

Fields

inner: SimpleLruCache<K, V>

The inner LRU cache.

hits: u64

Number of cache hits.

misses: u64

Number of cache misses.

Implementations

impl<K: Hash + Eq + Clone, V: Clone> StatCache<K, V>

pub fn new(capacity: usize) -> Self

Creates a new stat cache with the given capacity.

pub fn get(&mut self, key: &K) -> Option<&V>

Performs a lookup, tracking hit/miss.

pub fn put(&mut self, key: K, val: V)

Inserts a key-value pair.

pub fn hit_rate(&self) -> f64

Returns the hit rate.