Struct ResultCache 

pub struct ResultCache {
    pub capacity: usize,
    pub current_version: u64,
    /* private fields */
}

LRU cache for expensive simulation results.

Evicts least-recently-used entries when the capacity limit is reached. Invalidation is by version number: entries with a stale version are evicted.

Fields

capacity: usize

Maximum number of entries.

current_version: u64

Current cache version; entries below this are invalid.

Implementations

impl ResultCache

pub fn new(capacity: usize) -> Self

Create a new LRU cache with the given capacity.

pub fn put(&mut self, entry: CacheEntry)

Insert or update a cache entry. Evicts LRU entry when over capacity.

pub fn get(&mut self, key: &str) -> Option<&CacheEntry>

Retrieve a cached entry by key, moving it to the front (MRU).

Returns None if the key is not found or the entry is stale.

pub fn invalidate_all(&mut self)

Increment the version, invalidating all current cache entries.

pub fn remove(&mut self, key: &str)

Remove a specific key from the cache.

pub fn len(&self) -> usize

Number of entries currently in the cache.

pub fn is_empty(&self) -> bool

Returns true if the cache is empty.

pub fn evict_stale(&mut self)

Evict all stale entries (version < current_version).

Trait Implementations

impl Debug for ResultCache

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

Formats the value using the given formatter.