Struct Cache 

pub struct Cache { /* private fields */ }

Typed, TTL-aware access to Storage.

Expiry is decided here rather than in the backend, so SQLite, memory and any future backend agree on what “stale” means. Time comes from a Clock, which makes TTL behaviour testable without sleeping.

Implementations

impl Cache

pub fn new(storage: Arc<dyn Storage>, clock: Arc<dyn Clock>) -> Self

pub async fn get<T: DeserializeOwned>( &self, key: &StorageKey, ) -> Result<Option<T>>

Fresh value, or None when absent or expired.

pub async fn put<T: Serialize>( &self, key: &StorageKey, value: &T, ttl: Option<Duration>, ) -> Result<()>

Store a value. ttl of None means it stays until explicitly invalidated.

pub async fn invalidate(&self, key: &StorageKey) -> Result<()>

pub async fn invalidate_namespace(&self, namespace: &str) -> Result<()>

Trait Implementations

impl Clone for Cache

fn clone(&self) -> Cache

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Cache

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

Formats the value using the given formatter.