Struct MemoryStore 

pub struct MemoryStore<V, K = String>
where
    K: Eq + Hash + Clone,
    V: Clone,
{ /* private fields */ }

A thread-safe in-memory key-value store.

This store is designed to be WASM-compatible and can be used to cache any type of data that implements Clone. It uses interior mutability via RwLock to allow concurrent read access.

Type Parameters

• K: The key type, must implement Eq + Hash + Clone
• V: The value type, must implement Clone

Implementations

impl<V, K> MemoryStore<V, K>

where K: Eq + Hash + Clone, V: Clone,

pub fn new(config: MemoryStoreConfig) -> Self

Create a new memory store with the given configuration.

pub fn insert(&self, key: K, value: V)

Insert a value into the store.

If the store has a maximum entry limit and is at capacity, an arbitrary entry will be evicted to make room.

pub fn get(&self, key: &K) -> Option<V>

Get a value from the store.

Returns Some(value) if the key exists, None otherwise.

pub fn contains(&self, key: &K) -> bool

Check if a key exists in the store.

pub fn remove(&self, key: &K) -> Option<V>

Remove a value from the store.

Returns the removed value if the key existed.

pub fn clear(&self)

Clear all entries from the store.

pub fn len(&self) -> usize

Get the number of entries in the store.

pub fn is_empty(&self) -> bool

Check if the store is empty.

pub fn keys(&self) -> Vec<K>

Get all keys in the store.

pub fn stats(&self) -> MemoryStoreStats

Get statistics for the store.

Only meaningful if track_stats was enabled in the config.

pub fn reset_stats(&self)

Reset statistics.

pub fn get_or_insert_with<F>(&self, key: K, factory: F) -> V

where F: FnOnce() -> V,

Get or insert a value using a factory function.

If the key exists, returns the existing value. If the key doesn’t exist, calls the factory function to create a value, inserts it, and returns it.

Trait Implementations

impl<V, K> Clone for MemoryStore<V, K>

where K: Eq + Hash + Clone, V: Clone,

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V, K> Debug for MemoryStore<V, K>

where K: Eq + Hash + Clone + Debug, V: Clone + Debug,

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

Formats the value using the given formatter.

impl<V> Default for MemoryStore<V, String>

where V: Clone,

fn default() -> Self

Returns the “default value” for a type.