Node.js Page Crawl: Puppeteer Headless Browser Tutorial

This is probably the most tangible guide to Puppeteer's anti-blocking

Crawler friends understand, with Node.js with Puppeteer although smooth, but the IP is sealed up is a real headache. Recently helped a few friends do e-commerce data collection, found a trick ---Proxy IP RotationThis works ten times better than adding sleep to your code. This method works ten times better than if you add sleep or something to your code.

Hands-on with cramming agents into Puppeteer

First, straighten out how to feed the proxy IP to the browser. Here's aKey parametersA lot of people will miss it:

A real case in point: with ipipgo's Dynamic Residential Proxy, their API can pull the latest IPs directly. the code says so:

const proxy = await ipipgo.getProxy(); // replace with your own API here
const browser = await puppeteer.launch({
  args: [`--proxy-server=${proxy.url}`]
}).

Three Pitfalls of IP Rotation Don't Step Into

1. switch too often: Some brothers change their IP every 3 visits to the page, which results in triggering the site's wind control. The actual test down, the residential agent suggests30 requests/IPIt's more secure.

2. lit. harden one's head against the CAPTCHAThe only solution is to change your IP address immediately when you encounter a CAPTCHA. It is recommended to match the third-party coding platform, do not die with the verification code!

3. Ignoring time zone settings: Some websites detect the time zone of the browser, so remember to add the following to your startup parameters-timezone=Asia/Shanghai

Practical Tips and Tricks

Here are a few private tips to share:

1. In page.evaluate, add aRandom scrollingIt simulates the action of a real person browsing
2. Using the user-agent-override pluginRandomly switching UA
3. key monitoringPage load timeIf it takes more than 5 seconds, it will automatically change IP address (ipipgo's response time is measured within 1.8 seconds).

Frequently Asked Questions

Q: Why can't my agent connect?
A: First check the proxy format is not right, recommended to use the ipipgo provideGenerate code with one clickFunctionality, direct copy and paste without error

Q: What should I do if I encounter Cloudflare protection?
A: Try ipipgo'sPremium Residential AgentsTheir IP pool pass rate can reach over 92%, which is much stronger than ordinary proxies.

Q: How can I tell if a proxy is in effect?
A: Access in the browseripinfo.ioThis type of testing site to see if the IP displayed is a proxy IP

Choose an agent by looking at these hard indicators

There are a variety of agency services on the market, so it is advisable to focus on them:

• IP purity (directly affects survival time)
• Speed of response (anything over 3 seconds is recommended to pass)
• After-sales response (measured ipipgo's work order response speed is within 15 minutes)

Finally, in all honesty, in the business of crawlersTools determine the lower limit, strategies determine the upper limit. Choosing the right proxy service provider is equivalent to half of the success, like ipipgo, which providesIntelligent switching strategyThe service provider that can save a lot of time tossing and turning. After all, our time is worth a lot more than the agency fee.