Struct FileCache 

pub struct FileCache { /* private fields */ }

Persistent filesystem cache adapter.

Implementations

impl FileCache

pub fn new(config: FileCacheConfig) -> Self

Create a filesystem cache adapter.

pub async fn cleanup_expired(&self, max_entries: usize) -> AppResult<usize>

Remove expired cache entries, checking at most max_entries files.

Reads stay non-destructive to avoid unlinking a concurrent fresh write. Call this method from application-owned maintenance code when filesystem cache entries use TTLs and the cache directory needs bounded cleanup.

Trait Implementations

impl CacheStore for FileCache

fn get<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = AppResult<Option<String>>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Retrieve a string value by key.

fn set<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, key: &'life1 str, val: &'life2 str, ttl: Option<Duration>, ) -> Pin<Box<dyn Future<Output = AppResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

Store a string value with an optional TTL.

fn delete<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = AppResult<bool>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Delete a key and report whether it existed.

fn exists<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 str, ) -> Pin<Box<dyn Future<Output = AppResult<bool>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Check whether a key currently exists.