Axios Proxy Settings: Node.js Proxy Configuration

What does the Axios proxy setting actually do?

Crawler friends must have encountered the IP blocked tragedy, this time the proxy IP is a life-saving straw. To cite a real case: last week there was an e-commerce data crawl brother, with a bare IP continuous request for a platform API, the result is less than 2 hours to be blacklisted. Later in Node.js to Axios added proxy configuration.The same set of code can continue to run with a different IPThat's the beauty of proxies.

Three ways to play with Axios proxies in Node.js

First, install axios and https-proxy-agent package, this is the basic operation. Here's the kicker. There are three potholes that many people fall into when configuring proxies:

Hands-On Configuration Code

Here's a real usable configuration template (remember to replace it with your own ipipgo account info):

const axios = require('axios');
const HttpsProxyAgent = require('https-proxy-agent');

const proxyConfig = {
  protocol: 'http', host: 'your-username.username'; const proxyConfig = {
  host: 'your-username.ipipgo-proxy.com',
  port: 8888, auth: { 'https-proxy-agent'; const
  auth: {
    username: 'ipipgo-account',
    password: 'dynamic-key'
  }
}.

const axiosInstance = axios.create({
  httpsAgent: new HttpsProxyAgent(proxyConfig),
  timeout: 15000 // Recommended to be longer than free proxies.
});

Watch out for ipipgo'sDynamic key changes every 6 hours, remember to do the automatic update mechanism.

Why do you recommend ipipgo?

After using seven or eight proxy service providers, I ended up using ipipgo for a long time for three main reasons:

• Exclusive IP pool without serialization (this is so important)
• Supports simultaneous launch of 200+ concurrent requests without lagging
• Customer service response is more than 3 times faster than peers

Especially theirIntelligent Routing FunctionThis is a godsend for scenarios that require high-frequency requests, as it automatically matches the fastest nodes.

Frequently Asked Questions QA

Q: Proxy setting is successful but the request fails?
A：先检查ipipgo后台的IP白名单设置，再试试用curl命令代理服务器

Q: Partial request timeout at high concurrency?
A: Upgrade the ipipgo package to Enterprise and adjust the maxSockets parameter of axios at the same time

Q: What if I need to switch IP frequently?
A: Use ipipgo's API to get the proxy address dynamically, it is recommended to use it with their polling interface

One last piece of cold knowledge: many people forget to deal with connection pooling after axios.create(), leading to memory leaks. It is recommended to restart the instance every 6 hours, or use ipipgo's auto-refresh feature to save your mind.