Struct CacheMutexGuard

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pub struct CacheMutexGuard { /* private fields */ }

Expand description

互斥锁击穿防护

按 key 互斥锁，仅允许一个请求查库回填。

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impl CacheMutexGuard

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pub fn new() -> Self

创建互斥锁防护

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pub fn get_mutex(&self, key: &str) -> Arc<Mutex<()>> ⓘ

获取 key 的互斥锁 Arc（调用方自行 lock）

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pub async fn with_guard<F, R>(&self, key: &str, f: F) -> R
where F: Future<Output = R>,

在 key 互斥锁保护下执行闭包

Trait Implementations§

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impl Default for CacheMutexGuard

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl UnsafeUnpin for CacheMutexGuard

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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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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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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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impl<T, U> Into 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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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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