wcy-fdu / backon

Retry with backoff without effort.

backon  

Retry with backoff without effort.

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The opposite backoff implementation of the popular backoff.

• Newer: developed by Rust edition 2021 and latest stable.
• Cleaner: Iterator based abstraction, easy to use, customization friendly.
• Easier: Trait based implementations, works like a native function provided by closures.

Quick Start

Retry a blocking function.

use anyhow::Result;
use backon::BlockingRetryable;
use backon::ExponentialBuilder;

fn fetch() -> Result<String> {
     Ok("hello, world!".to_string())
}

fn main() -> Result<()> {
    let content = fetch.retry(&ExponentialBuilder::default()).call()?;
    println!("fetch succeeded: {}", content);

    Ok(())
}

Retry an async function.

use anyhow::Result;
use backon::ExponentialBuilder;
use backon::Retryable;

async fn fetch() -> Result<String> {
    Ok(reqwest::get("https://www.rust-lang.org").await?.text().await?)
}

#[tokio::main]
async fn main() -> Result<()> {
    let content = fetch.retry(&ExponentialBuilder::default()).await?;
    println!("fetch succeeded: {}", content);

    Ok(())
}

Contributing

Check out the CONTRIBUTING.md guide for more details on getting started with contributing to this project.

Getting help

Submit issues for bug report or asking questions in discussion.

License

^{Licensed under Apache License, Version 2.0.}