Enum EvictionPolicy 

pub enum EvictionPolicy {
    LRU,
    LFU,
    TTLFirst,
    Random(u64),
}

Policy used to select which entry to evict when the cache is full.

Variants

LRU

Evict the entry with the smallest access_count (approximated by insertion order for ties) — true LRU would require timestamps, but access_count serves as a proxy here.

LFU

Evict the entry with the lowest access_count.

TTLFirst

Evict the entry whose TTL expires soonest.

Random(u64)

Evict a pseudo-random entry using a seeded LCG.

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.