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MemoryBackend

Struct MemoryBackend 

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pub struct MemoryBackend<K, V, M = ()>
where K: Hash + Eq + Clone + Send + Sync, V: Clone + Send + Sync, M: Clone + Send + Sync,
{ /* private fields */ }
Expand description

In-memory storage backend

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impl<K, V, M> MemoryBackend<K, V, M>
where K: Hash + Eq + Clone + Send + Sync, V: Clone + Send + Sync, M: Clone + Send + Sync,

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pub fn new() -> Self

Create a new memory backend

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impl<K, V, M> Clone for MemoryBackend<K, V, M>
where K: Hash + Eq + Clone + Send + Sync, V: Clone + Send + Sync, M: Clone + Send + Sync,

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<K, V, M> Default for MemoryBackend<K, V, M>
where K: Hash + Eq + Clone + Send + Sync, V: Clone + Send + Sync, M: Clone + Send + Sync,

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl<K, V, M> StorageBackend for MemoryBackend<K, V, M>

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type Key = K

Key type for the storage
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type Value = V

Value type for the storage
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type Metadata = M

Metadata type for entries
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fn save<'life0, 'life1, 'async_trait>( &'life0 self, entries: &'life1 HashMap<K, Vec<CacheEntry<K, V, M>>>, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Save entries to storage
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fn load<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<HashMap<K, Vec<CacheEntry<K, V, M>>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Load entries from storage
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fn remove<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 K, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Remove entries for a specific key
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fn clear<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Clear all entries from storage
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fn contains<'life0, 'life1, 'async_trait>( &'life0 self, key: &'life1 K, ) -> Pin<Box<dyn Future<Output = Result<bool>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Check if storage contains a key
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fn size_bytes<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<u64>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Get approximate size of storage in bytes
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fn compact<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = Result<()>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Compact storage (optional operation for backends that support it)

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impl<K, V, M> Freeze for MemoryBackend<K, V, M>

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impl<K, V, M = ()> !RefUnwindSafe for MemoryBackend<K, V, M>

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impl<K, V, M> Send for MemoryBackend<K, V, M>

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impl<K, V, M> Sync for MemoryBackend<K, V, M>

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impl<K, V, M> Unpin for MemoryBackend<K, V, M>

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impl<K, V, M> UnsafeUnpin for MemoryBackend<K, V, M>

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impl<K, V, M = ()> !UnwindSafe for MemoryBackend<K, V, M>

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.