fastcache

Struct Cache

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pub struct Cache<K, V> { /* private fields */ }
Expand description

A not so accurate but performant time and capacity based cache.

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impl<K, V> Cache<K, V>
where K: Eq + Hash + Clone, V: Clone,

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pub fn new(capacity: usize, ttl: Duration) -> Self

Create a new cache with the given capacity and time-to-live (TTL) for values.

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pub fn len(&self) -> usize

Get the number of elements in the cache.

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pub fn capacity(&self) -> usize

Get the capacity of the cache.

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

Get the value associated with the given key, if it exists and is not expired.

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

Insert a key-value pair in the cache.

If the cache is full, it will evict the oldest entry.

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

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pub fn clear(&self)

Auto Trait Implementations§

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impl<K, V> !Freeze for Cache<K, V>

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impl<K, V> !RefUnwindSafe for Cache<K, V>

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impl<K, V> Send for Cache<K, V>
where K: Send, V: Send,

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impl<K, V> Sync for Cache<K, V>
where K: Send + Sync, V: Send + Sync,

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impl<K, V> Unpin for Cache<K, V>

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impl<K, V> UnwindSafe for Cache<K, V>
where K: UnwindSafe, V: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.