🔄 backoff-config ⚙️

backoff-config makes configuring backoff more flexible by providing a unified Backoff strategy enum and a BackoffConfig that supports deserialization.

The actual backoff logic is powered by the awesome backon crate. Make sure to check out backon to explore its amazing features and ergonomics!

backoff-config integrates with backon by implementing:

• backon::BackoffBuilder for BackoffConfig.
• backon::Backoff for Backoff.

Usage

1. Add to your Cargo.toml:

   backoff-config = "0.1"
   

2. Load BackoffConfig from your data source. Here’s an example using environment variables and the figment configuration library:

use serde::Deserialize;

#[derive(Deserialize)]
pub struct Config {
    pub backoff: BackoffConfig,
}

// Example environment variables:
// CONFIG__BACKOFF__STRATEGY=Constant
// CONFIG__BACKOFF__DELAY=1s
// CONFIG__BACKOFF__MAX_RETRIES=123

let config = figment::Figment::new()
.merge(Env::prefixed("CONFIG__").split("__"))
.extract::<Config>() ?;

3. Use config.backoff to build and apply your backoff strategy when calling retryable operations.

Examples

For an end-to-end usage example, see the TOML example and run it with:

cargo run --example toml

For more examples on the data formats, see:

• Env examples – loading config from environment variables.
• TOML examples – loading config from a TOML file.