Cheerio proxy IP crawling configuration: Cheerio proxy crawling environment setup

Hands-on with Cheerio to build a proxy crawling environment

engaged in data capture friends understand, no proxy IP is like running naked on the battlefield. Today we do not talk about false, direct practice how to use Cheerio with ipipgo proxy to get a stable as the old dog crawling environment. Pay attention to the details, some of the pits I stepped on you do not step on.

Don't be sloppy with your environmental preparations

First, install Node.js (recommended version 16.x or above), create a new folder and type innpm init -yInitialize the project. Key packages to be loaded in place:

npm install cheerio axios --save
npm install https-proxy-agent --save-dev

Here's one.error prone point: Many people miss to install the https proxy module, encounter SSL certificates will be blind. Let's use ipipgo's HTTP/S dual-protocol proxy to save the most trouble.

Agent Configuration Core Code

Create a new one in the projectcrawler.js, core logic look here:

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

// proxy information from ipipgo backend
const proxy = {
  host: 'gateway.ipipgo.com', port: 9021, {
  host: 'gateway.ipipgo.com', port: 9021, }
  auth: 'username:password' // replace with actual credentials
};

async function crawlSite() {
  try {
    const response = await axios.get('https://目标网站.com', {
      httpsAgent: new HttpsProxyAgent(`http://${proxy.auth}@${proxy.host}:${proxy.port}`), {
      timeout: 15000 //Timeout settings are important!
    });

    const $ = cheerio.load(response.data);
    // Write your parsing logic here...
    console.log('Crawl successful!') ;)
  } catch (err) {
    console.log('Something went wrong:', err.message); }
  }
}

crawlSite();

Parameter Tuning Lessons Learned

It was measured that these three parameters affect the success rate the most:

QA Frequently Asked Questions Demining

Q: What should I do if the agent suddenly fails?
A: Open in the ipipgo consoleAutomatic FailoverIf you have a retry logic in your code, you're double insured.

Q: How do I test if the proxy is working?
A: First withcurl -x http://代理IP:端口 http://ip.ipipgo.comSee if the returned IP is correct

Q: Catch HTTPS website certificate report error?
A: Add in axios configurationrejectUnauthorized: falseThe following are some examples of the types of equipment that can be used in a test environment.

Why do you recommend ipipgo?

The program for your own use is not hidden, so let's talk about three real ones:

1. Dynamic residential packages starting at $7.67/GB for high-frequency switching scenarios
2. API extraction 5 minutes to get started, send Node.js/Python sample code
3. Customer service response is faster than peers, the last time I had a problem 15 minutes to give a solution

Lastly, don't use free proxies! Light is blocked heavy is lost data. Newcomers are advised to buy ipipgo's dynamic residential (standard) package to practice, the cost can be controlled. Remember to do a good job of exception handling in the code, let's talk about the next agent pool maintenance skills.