Struct PersistentCache 

pub struct PersistentCache { /* private fields */ }

Available on crate feature persistent-cache only.

Persistent on-disk cache (feature persistent-cache).

Schema is versioned. Corrupt or mismatched files are treated as a miss (and optionally replaced on next put). Atomic writes use a temp file + rename.

Store persistent cache under the platform cache directory, not beside source files.

Implementations

impl PersistentCache

pub fn open( app_name: &str, file_name: &str, options: CacheOptions, ) -> Result<Self, PathError>

Open or create a persistent cache file under the platform cache directory.

pub fn path(&self) -> &Path

Path to the on-disk cache file.

Trait Implementations

impl Debug for PersistentCache

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

Formats the value using the given formatter.

impl DiscoveryCache for PersistentCache

fn get(&self, key: &CacheKey) -> Result<Option<CacheValue>, PathError>

Get a cached value by key.

fn put(&self, key: CacheKey, value: CacheValue) -> Result<(), PathError>

Store a value.

fn invalidate(&self, root: &Path) -> Result<(), PathError>

Invalidate all keys whose root equals or is under root.

fn clear(&self) -> Result<(), PathError>

Clear the entire cache.