Struct CachingSessionStore 

pub struct CachingSessionStore<Cache, Store> { /* private fields */ }

Two-tier SessionStore composed of a cache frontend and a store backend.

Reads hit the cache first; on miss, they fall through to the backend and populate the cache. Writes go to both tiers. Deletes remove from both.

This lets users pair a fast in-process cache (e.g. MemorySessionStore) with a durable backend (e.g. a Redis-backed store), keeping in-memory read performance while gaining cross-instance durability.

Mirrors tower_sessions_core::session_store::CachingSessionStore.

Example

use std::sync::Arc;
use tower_mcp::session_store::{CachingSessionStore, MemorySessionStore, SessionStore};

// In production the backend would be a Redis/Postgres/etc store type.
let backend = MemorySessionStore::new();
let cache = MemorySessionStore::new();
let store: Arc<dyn SessionStore> =
    Arc::new(CachingSessionStore::new(cache, backend));

Implementations

impl<Cache, Store> CachingSessionStore<Cache, Store>

pub fn new(cache: Cache, store: Store) -> Self

Create a new caching store with the given cache and backend.

Trait Implementations

impl<Cache: Clone, Store: Clone> Clone for CachingSessionStore<Cache, Store>

fn clone(&self) -> CachingSessionStore<Cache, Store>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Cache: Debug, Store: Debug> Debug for CachingSessionStore<Cache, Store>

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

Formats the value using the given formatter.

impl<Cache, Store> SessionStore for CachingSessionStore<Cache, Store>

where Cache: SessionStore, Store: SessionStore,

fn create<'life0, 'life1, 'async_trait>( &'life0 self, record: &'life1 mut SessionRecord, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

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

Create a new session record.

fn save<'life0, 'life1, 'async_trait>( &'life0 self, record: &'life1 SessionRecord, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>

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

Persist an existing session record. The ID is trusted.

fn load<'life0, 'life1, 'async_trait>( &'life0 self, id: &'life1 str, ) -> Pin<Box<dyn Future<Output = Result<Option<SessionRecord>>> + Send + 'async_trait>>

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

Load a session record by ID. Returns None if unknown or expired.

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

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

Remove a session record. Idempotent.