Struct ExponentialBackoffCalculator 

pub struct ExponentialBackoffCalculator { /* private fields */ }

An exponential backoff calculator that increases the delay between retries exponentially, clamped between a minimum and maximum duration.

The backoff for attempt n is calculated as:

clamp(min * backoff_factor ^ n, min, max)

Defaults

Parameter	Default
min	1 ms
max	1000 ms
backoff_factor	2.0

Example

use couchbase_core::retrybesteffort::{BestEffortRetryStrategy, ExponentialBackoffCalculator};
use std::time::Duration;
use std::sync::Arc;

let calc = ExponentialBackoffCalculator::new(
    Duration::from_millis(5),   // min
    Duration::from_millis(500), // max
    2.0,                        // backoff_factor
);
let strategy = Arc::new(BestEffortRetryStrategy::new(calc));

Implementations

impl ExponentialBackoffCalculator

pub fn new(min: Duration, max: Duration, backoff_factor: f64) -> Self

Creates a new ExponentialBackoffCalculator.

• min — Minimum backoff duration (floor).
• max — Maximum backoff duration (ceiling).
• backoff_factor — Multiplier applied per retry attempt (typically 2.0).

Trait Implementations

impl BackoffCalculator for ExponentialBackoffCalculator

fn backoff(&self, retry_attempts: u32) -> Duration

Returns the duration to wait before the given retry attempt number.

impl Clone for ExponentialBackoffCalculator

fn clone(&self) -> ExponentialBackoffCalculator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ExponentialBackoffCalculator

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

Formats the value using the given formatter.

impl Default for ExponentialBackoffCalculator

fn default() -> Self

Returns the “default value” for a type.