Struct LruPolicy 

#[non_exhaustive]
pub struct LruPolicy {
    pub promote_threshold: u32,
}

LRU eviction policy with frequency-based promotion.

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.

promote_threshold: u32

Minimum access frequency required for promotion.

Implementations

impl LruPolicy

pub const DEFAULT_THRESHOLD: u32 = 3

Default access threshold for promotion.

pub fn new(promote_threshold: u32) -> Self

Create a new policy with the given promotion threshold.

Trait Implementations

impl Default for LruPolicy

fn default() -> Self

Returns the “default value” for a type.

impl TierPolicy for LruPolicy

fn should_promote(&self, _key: u64, stats: &AccessStats) -> bool

Return true if the entry should be promoted to a faster tier.

fn eviction_candidate( &self, _tier: usize, entries: &FxHashMap<u64, CacheEntry>, tracker: &AccessTracker, ) -> Option<u64>

Select a candidate for eviction from the given tier.