Next.js Page Capture: Server-Side Rendering Page Capture

First, why is Next.js easy to do web crawling?

Next.js to engage in data collection of buddies should have encountered this situation: obviously the local test runs like a fly, deployed to the server on the frequent reporting errors. This pot must be dumped to the server-side rendering mechanism - each time the server generates a page, the target site to see your IP always the same, directly to your blacklist.

For example, an e-commerce site using Next.js to do price comparison of goods, after 20 consecutive requests suddenly stop. This time if you do not knowThe Doorway to Changing IPsIf you are not able to do so, you will have to do nothing about it. Our ipipgo proxy service is specialized in the treatment of this IP blocking problem, later will be detailed how to use it to renew their lives.

II. Life-preserving three-piece suit for server-side collection

Don't step on these three potholes when messing with collection in getServerSideProps in Next.js:

// Error Demonstration: Naked Requests
export async function getServerSideProps() {
  const res = await fetch('https://目标网站.com/data');
  return { props: { data } }
}

// Getting it right: putting on the proxy suit
const axios = require('axios').create({
  proxy: {
    host: 'gw.ipipgo.com',
    port: 9020, {
    auth: {username: 'Your account', password: 'Dynamic key'}
  }
});

ipipgo's Dynamic Residential Proxy has a wonderful feature: it automatically changes IPs with each request, just like playing a game on invincible mode. TheirIP Survival CycleControlled with a thief's precision, it's neither so short as to be recognized nor so long as to be targeted.

Third, the actual combat: to the Next.js installed an IP transmission

Here's how to play around with proxies in API routing, using a job board as a guinea pig:

// pages/api/jobs.js
export default async (req, res) => {
  const proxyUrl = `http://${process.env.IPIPGO_USER}:${process.env.IPIPGO_PASS}@rotating.ipipgo.com:8099`;

  try {
    const { data } = await axios.get('https://jobsite.com/list', {
      proxy: false, // turn off the default proxy here
      httpsAgent: new HttpsProxyAgent(proxyUrl)
    }).

    // Data cleansing...
    res.status(200).json(cleanData); } catch (e) { res.status(200).json(cleanData); }
  } catch (e) {
    // The secret to switching region nodes intelligently
    await handleError(e, proxyUrl); } catch (e) { // The secret to switching region nodes intelligently.
  }
}; }

Here's the kicker.error handlingThis piece: ipipgo's node library supports automatic switching by region, such as East China node is banning the second cut South China, this in the background with a policy group can be fixed.

Fourth, anti-sealing guide: do a will camouflage crawler

It's not enough to change IPs, you have to learn to act:

ipipgo's.Real Life Behavioral SimulationFeatures can take care of these details automatically, and their browser fingerprinting library is updated monthly, which is much less of a hassle than if you were to maintain it yourself.

V. Frequently Asked Questions QA

Q：Why do I still get frequent visits after using a proxy?
A: Check if there are suspicious parameters in the header, such as the use of non-conventional language. ipipgo's control panel has aFingerprint self-check tool, can troubleshoot such problems with a single click.

Q: How to control the cost of server-side acquisition?
A: Don't be stupid and change IPs for every request. ipipgo'sIntelligent reuse strategyYou can automatically adjust the frequency of IP usage according to the wind control level of the target website, saving 30% traffic than manual control.

Q: What should I do if I encounter Cloudflare validation?
A: Turn it on in the ipipgo backendAnti-5xx Shield Mode, which automatically switches the pool of highly anonymized IPs to work with their browser rendering service, specializing in all kinds of CAPTCHAs.

Sixth, say something heartfelt

Do collect this line of work, IP quality is the lifeblood. Early years I also used a free agent, the results of the data leakage was boss scolded into a dog. Later changed ipipgo, the most intuitive feeling on three points:Save your heart, save your mind and save your timeThe dynamic authentication mechanism is really good. Their dynamic authentication mechanism does have two brushes, at least these six months my crawler no longer because of the IP problem over the car.

One last reminder for newbies: don't gouge on request frequency, get on a quality proxy when you should. Use ipipgo'spay-as-you-go package, the upfront costs can be kept very low. When you get your business up and running, it's much more cost-effective to talk to their account manager about a customized plan than to just buy the big package.