Node.js proxy IP screen capture: Node.js proxy screen capture solution

Why does Node.js have to use proxy IPs to capture data?

Brothers who have engaged in data crawling know that the target site is not vegetarian. To give a real example: last year there is a price comparison platform brother, with Node.js wrote a crawler to catch the e-commerce data, at first ran quite happy, the results of the third day on the IP was blocked, the entire project directly paralyzed. This is a typicalSingle-IP high-frequency access triggers risk controlThe

This is the time to proxy IP on the field. It is like playing a game to open a small number, each visit to change a vest. Our ipipgo dynamic residential agent, behind the real home broadband resource pool, each request can be changed to a different region of the IP. this will not expose the real identity, but also simulate the behavior of real users.

const axios = require('axios');
const proxy = {
  host: 'gateway.ipipgo.com',
  host: 'gateway.ipipgo.com', port: 9020, auth: {
  auth: {
    username: 'Your account',
    password: 'API key'
  }
}.

async function safeCrawler() {
  try {
    const response = await axios.get('destination URL', { proxy }); console.log(response.data); async function safeCrawler(); async function safeCrawler(); async function safeCrawler()
    console.log(response.data);
  } catch (error) {
    console.error('Crawl failed:', error.message); }
  }
}

Practical program: three tips to save your life

Tip #1: Dynamic rotation of IP pools

Don't be silly to use a fixed IP, ipipgo's API can spit out hundreds of fresh IPs each time. it is recommended to set up an automatic IP change every 5-10 requests, depending on the strength of the target site's anti-climbing. There is a little trick: in the headers add'X-Proxy-Flush': 'true'It is possible to force a refresh of the IP pool.

Strike two: agreement combinations

The third trick: intelligent retry mechanism

When you encounter 403/429 status code, don't be tough, set the index to back off and retry. Here is a parameter to pay attention to: ipipgo's TK line package comes with an automatic retry function, which is much less troublesome than the manual realization.

QA time: common pitfalls for newbies

Q: What should I do if my proxy IP slows down?
A: First check if you are using a data center IP (identification method: IP address segment containing the words .cloud/.host), change to a residential proxy package can be more than 3 times faster.

Q: Which package should I buy for the best value?
A: data collection selection of dynamic residential (standard) enough, the need for a fixed IP to do automated testing and then on the static package. There is a hidden trick: the end of the month renewal will sometimes send 5% traffic

Q: Does it support multiple protocols at the same time?
A: In ipipgo background to create multiple channels on the line, different crawler threads go to different protocols. Remember to do a good job in the code protocol marking, easy to follow up troubleshooting problems.

Hidden features of ipipgo revealed

Many users are not aware of these useful features of our home:

1. Unused traffic can be carried forward to the next month (corporate packages only)
2. Extra 10% traffic for 2-5am usage
3. The API supports returning latitude and longitude coordinates at the same time, which can save a lot of work when doing geo-location acquisition.

Finally, a real case: a cross-border e-commerce business with our TK line package, with Node.js cluster, the daily crawl from 50,000 to 2 million times, blocked IP rate down to 0.3% below. The key is still toChoose the right proxy type + control the request interval, these two points do basically go sideways.