Trait Randomizer 

pub trait Randomizer {
    // Required method
    fn randomize(&self, interval: Duration) -> Duration;
}

Provides the interface by which BackoffHandlers can add randmoness to their retries. Randomization is useful to prevent multiple requests to an endpoint which fail concurrently from retrying the endpoint concurrently, which may exacerbate the problem or even trigger DoS protections.

Required Methods

fn randomize(&self, interval: Duration) -> Duration

Given an interval, applies a function to randomize it, returning the randomized interval.

Most RNGs require a mutable reference to self. Implementors should use a synchronization primitive like mutex to provide interior mutability. A RwLock is discouraged as BackoffHandler never takes shared/immutable reference to a Randomizer, rendering the overhead of a more complex primitive wasted.

Implementors

impl Randomizer for NoRandomization