Struct ExponentialBackoff 

pub struct ExponentialBackoff { /* private fields */ }

指数退避策略

Implementations

impl ExponentialBackoff

pub fn new(max_retries: u32, initial_delay: Duration) -> Self

创建新的指数退避策略

参数

• max_retries: 最大重试次数
• initial_delay: 初始延迟

pub fn with_max_delay(self, max_delay: Duration) -> Self

设置最大延迟

pub fn with_jitter(self) -> Self

启用抖动（Jitter）

抖动可以避免多客户端同时重试造成的雷鸣羊群效应（Thundering Herd）。

Trait Implementations

impl Clone for ExponentialBackoff

fn clone(&self) -> ExponentialBackoff

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExponentialBackoff

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

Formats the value using the given formatter.

impl RetryPolicy for ExponentialBackoff

fn should_retry(&self, attempt: u32) -> Option<Duration>

判断是否应该重试

fn max_retries(&self) -> u32

获取最大重试次数

fn should_retry_with_error( &self, attempt: u32, _error: &str, ) -> Option<Duration>

判断是否应该重试（带错误信息）