Cache

Struct Cache 

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

Caching utilities

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

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pub fn new(ttl_secs: u64, max_size: usize) -> Self

Create a new cache

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

Get value from cache

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

Put value in cache

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pub fn clear(&mut self)

Clear cache

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pub fn size(&self) -> usize

Get cache size

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pub fn hit_rate(&self) -> f32

Get cache hit rate

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: Sync, V: Sync,

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

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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> Fake for T

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fn fake<U>(&self) -> U
where Self: FakeBase<U>,

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fn fake_with_rng<U, R>(&self, rng: &mut R) -> U
where R: Rng + ?Sized, Self: FakeBase<U>,

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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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more