## LimitedPriorityLevelConfiguration

# Struct LimitedPriorityLevelConfiguration

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    pub struct LimitedPriorityLevelConfiguration {
        pub borrowing_limit_percent: Option<i32>,
        pub lendable_percent: Option<i32>,
        pub limit_response: Option<LimitResponse>,
        pub nominal_concurrency_shares: Option<i32>,
    }

Expand description

LimitedPriorityLevelConfiguration specifies how to handle requests that are subject to limits. It addresses two issues:

- How are requests for this priority level limited?
- What should be done with requests that exceed the limit?

## Fields§

§`borrowing_limit_percent: Option<i32>`

`borrowingLimitPercent`, if present, configures a limit on how many seats this priority level can borrow from other priority levels. The limit is known as this level’s BorrowingConcurrencyLimit (BorrowingCL) and is a limit on the total number of seats that this level may borrow at any one time. This field holds the ratio of that limit to the level’s nominal concurrency limit. When this field is non-nil, it must hold a non-negative integer and the limit is calculated as follows.

BorrowingCL(i) = round( NominalCL(i) * borrowingLimitPercent(i)/100.0 )

The value of this field can be more than 100, implying that this priority level can borrow a number of seats that is greater than its own nominal concurrency limit (NominalCL). When this field is left `nil`, the limit is effectively infinite.

§`lendable_percent: Option<i32>`

`lendablePercent` prescribes the fraction of the level’s NominalCL that can be borrowed by other priority levels. The value of this field must be between 0 and 100, inclusive, and it defaults to 0. The number of seats that other levels can borrow from this level, known as this level’s LendableConcurrencyLimit (LendableCL), is defined as follows.

LendableCL(i) = round( NominalCL(i) * lendablePercent(i)/100.0 )

§`limit_response: Option<LimitResponse>`

`limitResponse` indicates what to do with requests that can not be executed right now

§`nominal_concurrency_shares: Option<i32>`

`nominalConcurrencyShares` (NCS) contributes to the computation of the NominalConcurrencyLimit (NominalCL) of this level. This is the number of execution seats available at this priority level. This is used both for requests dispatched from this priority level as well as requests dispatched from other priority levels borrowing seats from this level. The server’s concurrency limit (ServerCL) is divided among the Limited priority levels in proportion to their NCS values:

NominalCL(i) = ceil( ServerCL * NCS(i) / sum_ncs ) sum_ncs = sum[priority level k] NCS(k)

Bigger numbers mean a larger nominal concurrency limit, at the expense of every other priority level.

If not specified, this field defaults to a value of 30.

Setting this field to zero supports the construction of a “jail” for this priority level that is used to hold some request(s)

## Trait Implementations§

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### impl Clone for LimitedPriorityLevelConfiguration

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#### fn clone(&self) -> LimitedPriorityLevelConfiguration

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 Debug for LimitedPriorityLevelConfiguration

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#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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### impl DeepMerge for LimitedPriorityLevelConfiguration

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#### fn merge_from(&mut self, other: Self)

Merge `other` into `self`.
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### impl Default for LimitedPriorityLevelConfiguration

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#### fn default() -> LimitedPriorityLevelConfiguration

Returns the “default value” for a type. Read more
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### impl<'de> Deserialize<'de> for LimitedPriorityLevelConfiguration

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#### fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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### impl PartialEq for LimitedPriorityLevelConfiguration

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#### fn eq(&self, other: &LimitedPriorityLevelConfiguration) -> bool

Tests for `self` and `other` values to be equal, and is used by `==`.
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#### fn ne(&self, other: &Rhs) -> bool

Tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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### impl Serialize for LimitedPriorityLevelConfiguration

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#### fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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### impl StructuralPartialEq for LimitedPriorityLevelConfiguration

## Auto Trait Implementations§

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### impl Freeze for LimitedPriorityLevelConfiguration

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### impl RefUnwindSafe for LimitedPriorityLevelConfiguration

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### impl Send for LimitedPriorityLevelConfiguration

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### impl Sync for LimitedPriorityLevelConfiguration

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### impl Unpin for LimitedPriorityLevelConfiguration

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### impl UnwindSafe for LimitedPriorityLevelConfiguration

## 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> 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.
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### impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,