Enum EvictionPolicy 

pub enum EvictionPolicy {
    Lru,
    Lfu,
    Fifo,
}

Eviction policy for the cache.

Determines which entry to evict when the cache reaches capacity.

Variants

Lru

Least Recently Used - evicts the entry that was accessed longest ago.

Best for general-purpose caching where recent items are more likely to be accessed again.

Lfu

Least Frequently Used - evicts the entry with the lowest access count.

Best for long-lived caches where consistently popular items should be retained regardless of recency.

Fifo

First In, First Out - evicts the oldest entry regardless of access pattern.

Best for time-based caching where age matters more than access patterns.

Trait Implementations

impl Clone for EvictionPolicy

fn clone(&self) -> EvictionPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EvictionPolicy

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

Formats the value using the given formatter.

impl Default for EvictionPolicy

fn default() -> EvictionPolicy

Returns the “default value” for a type.

impl PartialEq for EvictionPolicy

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for EvictionPolicy

impl Eq for EvictionPolicy

impl StructuralPartialEq for EvictionPolicy