Trait Strategy 

pub trait Strategy: MaybeSend + MaybeSync {
    // Required method
    fn backoff(&self, attempts: usize, time_spent: Instant) -> Option<Duration>;

    // Provided method
    fn backoff_at_least(
        &self,
        attempts: usize,
        time_spent: Instant,
        floor: Duration,
    ) -> Option<Duration> { ... }
}

The strategy interface

Required Methods

fn backoff(&self, attempts: usize, time_spent: Instant) -> Option<Duration>

A time that this retry should backoff Returns None when we should no longer backoff, despite possibly being below attempts

Provided Methods

fn backoff_at_least( &self, attempts: usize, time_spent: Instant, floor: Duration, ) -> Option<Duration>

The wait before the next attempt when the error asks for at least floor. Returns None when the strategy gives up instead of waiting.

Implementations on Foreign Types

impl Strategy for ()

fn backoff(&self, _attempts: usize, _time_spent: Instant) -> Option<Duration>

impl<S: ?Sized + Strategy> Strategy for Box<S>

fn backoff(&self, attempts: usize, time_spent: Instant) -> Option<Duration>

fn backoff_at_least( &self, attempts: usize, time_spent: Instant, floor: Duration, ) -> Option<Duration>

Implementors

impl Strategy for ExponentialBackoff