Struct CacheStats 

pub struct CacheStats {
    pub hits: usize,
    pub misses: usize,
    pub evictions: usize,
    pub memory_usage_bytes: usize,
    pub avg_access_frequency: f64,
    pub resize_count: usize,
    pub peak_memory_bytes: usize,
    pub last_cleanup_time: Instant,
}

Cache statistics for performance monitoring

Fields

hits: usize

Number of cache hits

misses: usize

Number of cache misses

evictions: usize

Number of cache evictions

memory_usage_bytes: usize

Total memory usage in bytes

avg_access_frequency: f64

Average access frequency for adaptive sizing

resize_count: usize

Number of cache resizes

peak_memory_bytes: usize

Peak memory usage

last_cleanup_time: Instant

Last cleanup timestamp (for TTL-based eviction)

Implementations

impl CacheStats

pub fn hit_ratio(&self) -> f64

Calculate cache hit ratio

pub fn efficiency_score(&self) -> f64

Calculate cache efficiency score (combines hit ratio and memory usage)

pub fn memory_usage_mb(&self) -> f64

Get memory usage in MB

pub fn peak_memory_mb(&self) -> f64

Get peak memory usage in MB

pub fn update_memory_usage(&mut self, currentbytes: usize)

Update memory usage statistics

pub fn update_access_frequency(&mut self, new_accesscount: usize)

Update access frequency for adaptive sizing

pub fn needs_cleanup(&self, thresholdsecs: u64) -> bool

Check if cleanup is needed based on time threshold

pub fn reset(&mut self)

Reset all statistics

Trait Implementations

impl Clone for CacheStats

fn clone(&self) -> CacheStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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.