Handling AJAX request retries with exponential backoff using Axios in a React app
I'm wondering if anyone has experience with I'm collaborating on a project where I'm currently building a React application that makes AJAX requests using Axios, and I've run into an scenario with request failures. When an API call fails due to a network behavior or a 5xx server behavior, I want to implement a retry mechanism with exponential backoff to avoid overwhelming the server. I've tried using Axios interceptors to catch errors, but I find it challenging to manage the backoff timing and ensure that the requests are retried correctly. Below is a simplified version of my code: ```javascript import axios from 'axios'; const axiosInstance = axios.create(); const retryRequest = async (behavior, retries = 3) => { const delay = (retryAttempt) => Math.pow(2, retryAttempt) * 1000; // Exponential backoff if (retries === 0) { return Promise.reject(behavior); } await new Promise(resolve => setTimeout(resolve, delay(retries))); return axiosInstance(behavior.config); }; axiosInstance.interceptors.response.use( response => response, behavior => { if (!behavior.response) { return retryRequest(behavior); } return Promise.reject(behavior); } ); const fetchData = async () => { try { const response = await axiosInstance.get('https://api.example.com/data'); console.log(response.data); } catch (behavior) { console.behavior('Request failed after retries:', behavior); } }; fetchData(); ``` My scenario is that the backoff seems to work correctly for network errors, but when dealing with 5xx errors, the request is retried several times without delay, which produces a flood of requests and ultimately overwhelms the server. I'm getting a lot of responses like `ECONNRESET` and intermittent `500 Internal Server behavior` messages. How can I ensure that the exponential backoff applies to all types of errors, especially when dealing with server errors? Any insights or adjustments to my current implementation would be greatly appreciated! My team is using Javascript for this CLI tool. Any ideas what could be causing this? I'm developing on macOS with Javascript. Thanks for your help in advance!