Struct InMemoryBackend 

pub struct InMemoryBackend { /* private fields */ }

An in-memory CacheBackend implementation backed by moka.

The backend is cheap to clone and shares a single underlying cache.

Implementations

impl InMemoryBackend

pub fn new(max_capacity: u64) -> Self

Creates a new in-memory cache with the provided max_capacity.

The capacity is expressed in number of cached entries, not bytes.

Trait Implementations

impl CacheBackend for InMemoryBackend

async fn get(&self, key: &str) -> Result<Option<CacheRead>, CacheError>

Fetches a cached entry by key.

async fn set( &self, key: String, entry: CacheEntry, ttl: Duration, stale_for: Duration, ) -> Result<(), CacheError>

Stores an entry with a time-to-live and additional stale window.

async fn invalidate(&self, key: &str) -> Result<(), CacheError>

Invalidates the cache entry for key, if present.

async fn get_keys_by_tag(&self, tag: &str) -> Result<Vec<String>, CacheError>

Retrieves all cache keys associated with a tag.

async fn list_tags(&self) -> Result<Vec<String>, CacheError>

Lists all currently indexed tags.

fn invalidate_by_tag( &self, tag: &str, ) -> impl Future<Output = Result<usize, CacheError>> + Send

Invalidates all cache entries associated with a tag.

fn invalidate_by_tags( &self, tags: &[String], ) -> impl Future<Output = Result<usize, CacheError>> + Send

Invalidates all cache entries associated with multiple tags.

impl Clone for InMemoryBackend

fn clone(&self) -> InMemoryBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.