retrier

A simple Go (Golang) library for retries featuring generics. Backoff is configurable. The most useful is probably exponential backoff with full jitter.

For usage see the godoc.

Usage

Making an HTTP request

body, err := retrier.DoWithData(func() ([]byte, error) {
	resp, err := http.Get(url)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}
	return body, nil
}, retrier.NewExponentialBackoff())

Connecting to a DB

err := retrier.Do(func() error {
	// db of type *sql.DB
	if err = db.PingContext(context.Background()); err != nil {
		return err
	}
	return nil
}, retrier.NewExponentialBackOff())
if err != nil {
	return nil, fmt.Errorf("error pinging the db: %w", err)
}

Contributions

Contributions are welcome! Please create an issue for significant changes.

Inspired By

• https://github.com/avast/retry-go
• https://github.com/cenkalti/backoff