Struct DedupSessionCache 

pub struct DedupSessionCache { /* private fields */ }

Session-scoped cache for decoded thumbnails and fingerprints.

Keys are the FNV-1a hash of the file path bytes. The cache is bounded to capacity entries; excess entries are evicted using LRU order tracked by lru_order.

Implementations

impl DedupSessionCache

pub fn new(capacity: usize) -> Self

Create a new session cache with the given capacity.

pub fn get_or_compute_phash( &mut self, path: &Path, compute: impl FnOnce() -> DedupResult<u64>, ) -> DedupResult<u64>

Look up or compute the pHash for path.

On cache hit where the mtime matches, returns the cached value. On mtime mismatch or absence, calls compute, stores the result, and returns it.

pub fn len(&self) -> usize

Return the number of entries in the cache.

pub fn is_empty(&self) -> bool

Return true if the cache is empty.

pub fn save_to_file(&self, path: &Path) -> DedupResult<()>

Save the cache to a JSON file.

pub fn load_from_file(path: &Path) -> DedupResult<Self>

Load a previously saved cache from a JSON file.

The LRU order is reset (all entries treated as equally recent).

Trait Implementations

impl Debug for DedupSessionCache

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

Formats the value using the given formatter.