Struct CacheMetricsSnapshot 

pub struct CacheMetricsSnapshot {
    pub hit_rate: f64,
    pub miss_rate: f64,
    pub total_hits: u64,
    pub total_misses: u64,
    pub total_evictions: u64,
    pub eviction_rate: f64,
    pub avg_latency_ns: f64,
}

Immutable point-in-time snapshot of cache metrics.

Obtained by calling CacheMetrics::snapshot.

Fields

hit_rate: f64

Fraction of lookups that resulted in a hit: hits / (hits + misses).

miss_rate: f64

Fraction of lookups that resulted in a miss: misses / (hits + misses).

total_hits: u64

Total cache hits at snapshot time.

total_misses: u64

Total cache misses at snapshot time.

total_evictions: u64

Total evictions at snapshot time.

eviction_rate: f64

Eviction rate: evictions / (hits + misses).

avg_latency_ns: f64

Average lookup latency in nanoseconds.

Implementations

impl CacheMetricsSnapshot

pub fn is_hit_rate_above(&self, threshold: f64) -> bool

Return true when the hit rate exceeds threshold (e.g. 0.80).

pub fn total_ops(&self) -> u64

Return the total number of operations (hits + misses).

Trait Implementations

impl Clone for CacheMetricsSnapshot

fn clone(&self) -> CacheMetricsSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CacheMetricsSnapshot

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.