https://github.com/embarkstudios/tryhard

💫 Easily retry futures 🦀
https://github.com/embarkstudios/tryhard

Last synced: about 1 year ago
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💫 Easily retry futures 🦀

• Host: GitHub
• URL: https://github.com/embarkstudios/tryhard
• Owner: EmbarkStudios
• License: apache-2.0
• Created: 2020-11-14T11:07:28.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2025-06-23T12:58:24.000Z (about 1 year ago)
• Last Synced: 2025-06-23T13:50:44.068Z (about 1 year ago)
• Language: Rust
• Size: 57.6 KB
• Stars: 212
• Watchers: 4
• Forks: 13
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE-APACHE
  • Code of conduct: CODE_OF_CONDUCT.md
  • Codeowners: .github/CODEOWNERS

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README

          
# 💫 tryhard

[![Embark](https://img.shields.io/badge/embark-open%20source-blueviolet.svg)](https://embark.dev)

[![Embark](https://img.shields.io/badge/discord-ark-%237289da.svg?logo=discord)](https://discord.gg/dAuKfZS)

[![Crates.io](https://img.shields.io/crates/v/tryhard.svg)](https://crates.io/crates/tryhard)

[![Docs](https://docs.rs/tryhard/badge.svg)](https://docs.rs/tryhard)

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[![Build status](https://github.com/EmbarkStudios/tryhard/workflows/CI/badge.svg)](https://github.com/EmbarkStudios/tryhard/actions)

`tryhard` makes it easy to retry futures that might fail. You can control the number of retries, the backoff strategy, and the max duration.

## Examples

First imagine you have some async function that can fail:

```rust

async fn read_file(path: &str) -> Result {

    // ...

}

```

Calling that function and retrying at most 10 times with no delay between attempts can be done like so:

```rust

tryhard::retry_fn(|| read_file("Cargo.toml"))

    .retries(10)

    .await?;

```

You can also retry with a fixed delay between attempts:

```rust

tryhard::retry_fn(|| read_file("Cargo.toml"))

    .retries(10)

    .fixed_backoff(Duration::from_millis(100))

    .await?;

```

Or exponential backoff, where the delay doubles each time, with a max delay of 1 second:

```rust

tryhard::retry_fn(|| read_file("Cargo.toml"))

    .retries(10)

    .exponential_backoff(Duration::from_millis(10))

    .max_delay(Duration::from_secs(1))

    .await?;

```

See [the docs](https://docs.rs/tryhard) for more details.

## Contributing

[![Contributor Covenant](https://img.shields.io/badge/contributor%20covenant-v2.0-ff69b4.svg)](../main/CODE_OF_CONDUCT.md)

We welcome community contributions to this project.

Please read our [Contributor Guide](CONTRIBUTING.md) for more information on how to get started.

## License

Licensed under either of

* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)

* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)

at your option.

### Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.