Node.js Web Crawling: Node.js Crawler Tutorials

Hands-on teaching you to use Node.js to catch web pages without blocking

The biggest headache for crawlers is IP blocking, which is as embarrassing as going to the supermarket to try to eat and being stared at by the security guards. At this time the proxy IP is your cloak of invisibility, especially like ipipgo this professional service provider, can let you quietly complete the data collection.

How exactly does a proxy IP keep you safe?

Many newbies think that just any free proxy will work, but it turns out to be more exciting than riding a roller coaster - sometimes it works and sometimes it doesn't. Regular service provider ipipgo's proxy pool has three great tricks up its sleeve:Dynamic IP switching(Automatically changing vests),Multi-location server room deployment(pretending to be a local)Success Guarantee(Maintained by dedicated staff).

const axios = require('axios');
const tunnel = require('tunnel');

const agent = tunnel.httpsOverHttp({
  proxy: {
    host: 'ipipgo-proxy.com', // replace real address
    port: 8000, { proxyAuth: 'username: 'ipipgo-proxy.com', // replace real address
    proxyAuth: 'username:password' // get in ipipgo backend
  }
}).

axios.get('https://目标网站.com', {
  httpsAgent: agent, {
  timeout: 10000 // The timeout setting is important!
})
.then(res => console.log(res.data))
.catch(err => console.error('Rollover:', err));

A practical guide to avoiding the pit

Seen too many people fall into these pits:

Frequently Asked Questions by White People

Q: What should I do if I use a proxy IP and it hangs?
A: Don't use those free pheasant proxies, go directly to ipipgo's commercial-grade service, they have a 24-hour O&M team keeping an eye on them.

Q: How do I know if the proxy IP is fast or not?
A: Write your own speed test script, or use the node speed test tool provided by ipipgo's backend, their BGP lines are quite stable.

Q: Obviously I used a proxy and still got blocked?
A: Check these three points: 1. request frequency is not too high 2. there is no simulation of browser fingerprints 3. proxy IP is not exposed

advanced maneuver

Try this combo if you want to be more stealthy:
1. With ipipgoResidential AgentsMasquerading as a real user
2. Randomization of User-Agent per request
3. Important pages plus mouse track simulation
With this wave of maneuvering, the site's wind control system is basically clueless.

As a final reminder, don't just look at price when choosing a proxy service provider. Providers like ipipgo offerAPI real-time extraction,Success rate statement,Customized billing modelsis the king. After all, the success or failure of a crawler project sometimes depends on the quality of the proxy IP.