axios-retry

Axios plugin that intercepts failed requests and retries them whenever possible.

Installation

npm install axios-retry

Usage

// CommonJS
// const axiosRetry = require('axios-retry');

// ES6
import axiosRetry from 'axios-retry';

axiosRetry(axios, { retries: 3 });

axios.get('http://example.com/test') // The first request fails and the second returns 'ok'
  .then(result => {
    result.data; // 'ok'
  });

// Exponential back-off retry delay between requests
axiosRetry(axios, { retryDelay: axiosRetry.exponentialDelay });

// Custom retry delay
axiosRetry(axios, { retryDelay: (retryCount) => {
  return retryCount * 1000;
}});

// Works with custom axios instances
const client = axios.create({ baseURL: 'http://example.com' });
axiosRetry(client, { retries: 3 });

client.get('/test') // The first request fails and the second returns 'ok'
  .then(result => {
    result.data; // 'ok'
  });

// Allows request-specific configuration
client
  .get('/test', {
    'axios-retry': {
      retries: 0
    }
  })
  .catch(error => { // The first request fails
    error !== undefined
  });

Note: Unless shouldResetTimeout is set, the plugin interprets the request timeout as a global value, so it is not used for each retry but for the whole request lifecycle.

Options

Name	Type	Default	Description
retries	`Number`	`3`	The number of times to retry before failing. 1 = One retry after first failure
retryCondition	`Function`	`isNetworkOrIdempotentRequestError`	A callback to further control if a request should be retried. By default, it retries if it is a network error or a 5xx error on an idempotent request (GET, HEAD, OPTIONS, PUT or DELETE).
shouldResetTimeout	`Boolean`	false	Defines if the timeout should be reset between retries
retryDelay	`Function`	`function noDelay() { return 0; }`	A callback to further control the delay in milliseconds between retried requests. By default there is no delay between retries. Another option is exponentialDelay (Exponential Backoff). The function is passed `retryCount` and `error`.
onRetry	`Function`	`function onRetry(retryCount, error, requestConfig) { return; }`	A callback to notify when a retry is about to occur. Useful for tracing. By default nothing will occur. The function is passed `retryCount`, `error`, and `requestConfig`.

Testing

Clone the repository and execute:

npm test

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