Good default configuration for axios in node.js

axios-instance-config.js

const axios = require('axios');
const http = require('http');
const https = require('https');

module.exports = axios.create({
  //60 sec timeout
  timeout: 60000,

  //keepAlive pools and reuses TCP connections, so it's faster
  httpAgent: new http.Agent({ keepAlive: true }),
  httpsAgent: new https.Agent({ keepAlive: true }),
  
  //follow up to 10 HTTP 3xx redirects
  maxRedirects: 10,
  
  //cap the maximum content length we'll accept to 50MBs, just in case
  maxContentLength: 50 * 1000 * 1000
});

//optionally add interceptors here...

In order to use agentkeepalive in axios, you can pass its agents in request config properties httpAgentand httpsAgent.

Something like

const Agent = require('agentkeepalive');
const keepAliveAgent = new Agent({
  maxSockets: 100,
  maxFreeSockets: 10,
  timeout: 60000, // active socket keepalive for 60 seconds
  freeSocketTimeout: 30000, // free socket keepalive for 30 seconds
});

const axiosInstance = axios.create({httpAgent: keepAliveAgent});
...

Thank you!

These
... httpAgent: new http.Agent({ keepAlive: true }), httpsAgent: new https.Agent({ keepAlive: true }), ...

fixed the weird HPE_INVALID_CHUNK_SIZE error when talking to a proxied API server that was not properly set up.

Hi, i would like to ask,
is this for NODE.JS server ? or i also can apply this method in react app ?

Hi, i would like to ask,
is this for NODE.JS server ? or i also can apply this method in react app ?

This is for node.js only.

Hi, i would like to ask,
is this for NODE.JS server ? or i also can apply this method in react app ?

@squalvj: Did you ever find a solution for react app? If you could kindly share your solution, would be greatly appreciated!

Author's small explanation: https://medium.com/@ccnokes/one-con-i-discovered-about-axios-recently-is-that-it-doesnt-have-the-best-default-configuration-e6e3a8cba6fa

Thank you @ccnokes and @supertong - solved some very frustrating issues thanks to your comments!

Please note that since Node.js 19.0.0, http.globalAgent enables keepAlive by default, which means that in Axios, when no httpAgent parameter is passed, keepAlive is also enabled by default.