Struct Backoff 

pub struct Backoff { /* private fields */ }

An exponential-backoff policy.

Implementations

impl Backoff

pub const fn new(base_ms: u64, max_ms: u64, max_retries: u32) -> Backoff

A policy starting at base_ms, doubling each attempt, capped at max_ms, giving up after max_retries.

const so a caller can state its policy as a constant next to the reasoning for it, rather than rebuilding one per call.

pub fn delay_ms(&self, attempt: u32) -> u64

The (un-jittered) delay before retry attempt (0-based): base * 2^attempt, saturating and capped at max_ms.

pub fn jittered_delay_ms(&self, attempt: u32, rand01: f64) -> u64

The full-jitter delay for attempt: a uniform sample in [0, delay], given a random fraction rand01 in [0, 1).

pub fn should_retry(&self, attempt: u32) -> bool

Whether an attempt (0-based) should be retried.

pub fn max_retries(&self) -> u32

The configured maximum number of retries.

Trait Implementations

impl Clone for Backoff

fn clone(&self) -> Backoff

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Backoff

impl Debug for Backoff

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

Formats the value using the given formatter.

impl Eq for Backoff

impl PartialEq for Backoff

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Backoff