Struct rama::utils::backoff::ExponentialBackoff

pub struct ExponentialBackoff<F, R = HasherRng> { /* private fields */ }
Expand description

A jittered exponential backoff strategy.

The backoff duration will increase exponentially for every subsequent backoff, up to a maximum duration. A small amount of random jitter is added to each backoff duration, in order to avoid retry spikes.

Implementations§

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impl<F, R> ExponentialBackoff<F, R>
where R: Rng + Clone, F: Fn() -> R + Clone,

pub fn new( min: Duration, max: Duration, jitter: f64, rng_creator: F, ) -> Result<ExponentialBackoff<F, R>, InvalidBackoff>

Create a new ExponentialBackoff.

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Returns a config validation error if:

  • min > max
  • max > 0
  • jitter >= 0.0
  • jitter < 100.0
  • jitter is finite

Trait Implementations§

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impl<F, R> Backoff for ExponentialBackoff<F, R>
where R: Rng, F: Send + Sync + 'static,

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async fn next_backoff(&self) -> bool

Initiate the next backoff in the sequence. Return false in case no backoff is possible anymore (e.g. max retries). Read more
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async fn reset(&self)

Reset the backoff to its initial state. Read more
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impl Clone for ExponentialBackoff<()>

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fn clone(&self) -> ExponentialBackoff<()>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<F, R> Clone for ExponentialBackoff<F, R>
where R: Rng + Clone, F: Fn() -> R + Clone,

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fn clone(&self) -> ExponentialBackoff<F, R>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<F, R> Debug for ExponentialBackoff<F, R>
where F: Debug, R: Debug,

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

Formats the value using the given formatter. Read more
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impl Default for ExponentialBackoff<()>

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fn default() -> ExponentialBackoff<()>

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

Auto Trait Implementations§

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impl<F, R = HasherRng> !Freeze for ExponentialBackoff<F, R>

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impl<F, R = HasherRng> !RefUnwindSafe for ExponentialBackoff<F, R>

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impl<F, R> Send for ExponentialBackoff<F, R>
where F: Send, R: Send,

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impl<F, R> Sync for ExponentialBackoff<F, R>
where F: Sync, R: Send,

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impl<F, R> Unpin for ExponentialBackoff<F, R>
where F: Unpin, R: Unpin,

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impl<F, R> UnwindSafe for ExponentialBackoff<F, R>
where F: UnwindSafe, R: UnwindSafe,

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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