Exponential Backoff [![GoDoc][godoc image]][godoc]

This is a Go port of the exponential backoff algorithm from [Google's HTTP Client Library for Java][google-http-java-client].

[Exponential backoff][exponential backoff wiki] is an algorithm that uses feedback to multiplicatively decrease the rate of some process, in order to gradually find an acceptable rate. The retries exponentially increase and stop increasing when a certain threshold is met.

Usage

Import path is github.com/cenkalti/backoff/v5. Please note the version part at the end.

For most cases, use Retry function. See [example_test.go][example] for an example.

If you have specific needs, copy Retry function (from [retry.go][retry-src]) into your code and modify it as needed.

Contributing

• I would like to keep this library as small as possible.
• Please don't send a PR without opening an issue and discussing it first.
• If proposed change is not a common use case, I will probably not accept it.

[godoc]: https://pkg.go.dev/github.com/cenkalti/backoff/v5 [godoc image]: https://godoc.org/github.com/cenkalti/backoff?status.png

[google-http-java-client]: https://github.com/google/google-http-java-client/blob/da1aa993e90285ec18579f1553339b00e19b3ab5/google-http-client/src/main/java/com/google/api/client/util/ExponentialBackOff.java [exponential backoff wiki]: http://en.wikipedia.org/wiki/Exponential_backoff

[retry-src]: https://github.com/cenkalti/backoff/blob/v5/retry.go [example]: https://github.com/cenkalti/backoff/blob/v5/example_test.go