async-retry

async-retry

Retrying made simple, easy, and async.

Usage

// Packages
const retry = require('async-retry');
const fetch = require('node-fetch');

await retry(
  async (bail) => {
    // if anything throws, we retry
    const res = await fetch('https://google.com');

    if (403 === res.status) {
      // don't retry upon 403
      bail(new Error('Unauthorized'));
      return;
    }

    const data = await res.text();
    return data.substr(0, 500);
  },
  {
    retries: 5,
  }
);

API

retry(retrier : Function, opts : Object) => Promise

• The supplied function can be async or not. In other words, it can be a function that returns a Promise or a value.
• The supplied function receives two parameters
  • A Function you can invoke to abort the retrying (bail)
  • A Number identifying the attempt. The absolute first attempt (before any retries) is 1.
• The opts are passed to node-retry. Read its docs
  • retries: The maximum amount of times to retry the operation. Default is 10.
  • factor: The exponential factor to use. Default is 2.
  • minTimeout: The number of milliseconds before starting the first retry. Default is 1000.
  • maxTimeout: The maximum number of milliseconds between two retries. Default is Infinity.
  • randomize: Randomizes the timeouts by multiplying with a factor between 1 to 2. Default is true.
  • onRetry: an optional Function that is invoked after a new retry is performed. It's passed the Error that triggered it as a parameter.

Authors

• Guillermo Rauch (@rauchg) - Vercel
• Leo Lamprecht (@notquiteleo) - Vercel

Similar packages

Other packages similar to async-retry

retry

The 'retry' package provides similar functionality for retrying operations, with a focus on both synchronous and asynchronous control flow. It offers a more extensive set of options for customizing retry behavior but does not provide an async/await interface out of the box.

p-retry

The 'p-retry' package is another alternative that supports retrying asynchronous operations using Promises. It has a similar API to async-retry but is built specifically for use with Promises and provides slightly different options for customizing the retry behavior.

retry-axios

The 'retry-axios' package is designed to work as an interceptor for axios, a popular HTTP client. It allows you to automatically retry failed HTTP requests, and it is specifically tailored for axios users, unlike async-retry which is more generic and can be used with any asynchronous operation.