Struct NoopMetrics 

pub struct NoopMetrics;

No-op metrics implementation (default)

Zero overhead when metrics are not needed.

Trait Implementations

impl CacheMetrics for NoopMetrics

fn record_hit(&self, _key: &str, _tier: CacheTier)

Record a cache hit

fn record_miss(&self, _key: &str)

Record a cache miss

fn record_stale_hit(&self, _key: &str)

Record a stale hit (served stale while revalidating)

fn record_latency(&self, _operation: CacheOperation, _duration: Duration)

Record operation latency

fn record_eviction(&self, _reason: EvictionReason)

Record an eviction

fn record_size(&self, _size: usize, _memory_bytes: usize)

Record cache size

impl Clone for NoopMetrics

fn clone(&self) -> NoopMetrics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NoopMetrics

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

Formats the value using the given formatter.

impl Default for NoopMetrics

fn default() -> NoopMetrics

Returns the “default value” for a type.

impl Copy for NoopMetrics