Struct Cache

pub struct Cache<K> { /* private fields */ }

A thread-safe concurrent cache from key K to arbitrarily typed values

Implementations

impl<K: Hash + Eq> Cache<K>

pub fn new(num_pages: usize, page_size: usize) -> Self

Create a new cache setting page size and number of pages.

page_size determines the maximum size of values that can be stored in the cache.

num pages determines how many slabs of memory of this size should be allocated.

Each page has its own read-write lock, so the more pages you have, the less likely you are to have lock contention.

pub fn insert<V: 'static>(&self, key: K, val: V) -> Cached<'_, V>

Insert a value V into cache with key K, returns a Cached to the newly stored or spilled value

NOTE If you insert different values under the same key, you will only get one of them out again. Updates are not possible.

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

Is this value in the cache?

Trait Implementations

impl<K> Send for Cache<K>

impl<K> Sync for Cache<K>