Struct CacheStats 

#[non_exhaustive]
pub struct CacheStats {
    pub hits: u64,
    pub misses: u64,
    pub evictions: u64,
    pub insertions: u64,
    pub rejections: u64,
}

Counters describing cache behaviour, for tests and diagnostics.

These are observations, not API guarantees: eviction policy details are explicitly internal (ARCHITECTURE §Layer 4).

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

hits: u64

Lookups that found a retained tile.

misses: u64

Lookups that found nothing.

evictions: u64

Tiles dropped to stay within budget.

insertions: u64

Tiles offered to the cache.

rejections: u64

Tiles not retained because one alone exceeded the whole budget.

Implementations

impl CacheStats

pub fn hit_rate(&self) -> Option<f64>

Hit rate over all lookups, or None if there were none.

Trait Implementations

impl Clone for CacheStats

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CacheStats

impl Debug for CacheStats

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

Formats the value using the given formatter.

impl Default for CacheStats

fn default() -> Self

Returns the “default value” for a type.

impl Eq for CacheStats

impl PartialEq for CacheStats

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CacheStats