exp_backoff

Overview

This crate implements jittered backoff. Useful when retrying operations that can potentially fail (i.e. network calls). The implementation is based on this article from the AWS Architecture Blog.

Usage

You can use it like so:

use exp_backoff::*;
use std::error::Error;
use std::{thread, time::Duration};

fn func_that_can_fail() -> Result<(), Box<dyn Error>> {
    if true {
        return Err("some error")?;
    }

    Ok(())
}

fn main() -> Result<(), Box<dyn Error>> {
    let mut bo = BackoffBuilder::new().build();
    for _ in 0..5 {
        match func_that_can_fail() {
            Err(e) => {
                println!("failed: {:?}, retry...", e);
                thread::sleep(Duration::from_nanos(bo.pause()));
            }
            _ => println!("we're okay"),
        }
    }

    Ok(())
}