Struct MemoryBackend 

pub struct MemoryBackend { /* private fields */ }

Default in-process tier-1 cache. Arc<Mutex<HashMap<u64, CachedEntry>>> — no async I/O, no external dependencies, identical behavior on native and WASM.

Implementations

impl MemoryBackend

pub fn new() -> Self

pub fn len(&self) -> usize

Snapshot the number of entries — useful for tests and metrics.

pub fn is_empty(&self) -> bool

Trait Implementations

impl CacheBackend for MemoryBackend

fn get<'life0, 'async_trait>( &'life0 self, key: u64, ) -> Pin<Box<dyn Future<Output = Option<CachedEntry>> + Send + 'async_trait>>

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

Look up an entry. Backends may return None for “not present” OR “present but failed to deserialize” — the resolver treats both as cache miss and falls through to the next tier or the provider.

fn put<'life0, 'async_trait>( &'life0 self, key: u64, entry: CachedEntry, ) -> Pin<Box<dyn Future<Output = Result<(), CacheError>> + Send + 'async_trait>>

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

Insert or replace an entry. Returns Err only on backend storage failure (poisoned mutex, IndexedDB transaction failure, etc.) — TTL math happens at get time, not put.

fn invalidate<'life0, 'async_trait>( &'life0 self, key: u64, ) -> Pin<Box<dyn Future<Output = Result<(), CacheError>> + Send + 'async_trait>>

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

Remove a single entry. No-op if the key is absent.

fn invalidate_by_tag<'life0, 'life1, 'async_trait>( &'life0 self, tag: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<(), CacheError>> + Send + 'async_trait>>

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

Remove every entry whose tags contain the given tag. Used by the resolver’s invalidate_by_slug / invalidate_by_namespace APIs.

fn clear<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<(), CacheError>> + Send + 'async_trait>>

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

Drop everything.

fn shutdown<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

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

Optional graceful shutdown (flush pending writes, close transactions). Default no-op.

impl Clone for MemoryBackend

fn clone(&self) -> MemoryBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MemoryBackend

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

Formats the value using the given formatter.

impl Default for MemoryBackend

fn default() -> MemoryBackend

Returns the “default value” for a type.