Enum RetryBackoff 

pub enum RetryBackoff {
    Fixed(Duration),
    Exponential {
        base: Duration,
        max: Duration,
    },
}

重试退避策略。

Variants

Fixed(Duration)

固定间隔。

Exponential

指数退避（delay = base * 2^attempt，不超过 max）。

Fields

base: Duration

max: Duration

Trait Implementations

impl Clone for RetryBackoff

fn clone(&self) -> RetryBackoff

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RetryBackoff

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

Formats the value using the given formatter.

impl Default for RetryBackoff

fn default() -> Self

Returns the “default value” for a type.