Public data mining tools: public data mining programs

How to play with public data mining tools? Try this "cloak and dagger" program!

Recently, a lot of people are asking, want to grab data from the Internet batch always be stopped by the site how to do? To put it bluntly is that the site found that you frequently visit the black IP. this time you have to use the proxy IP this "invisibility cloak", today we will talk about how to use ipipgo's proxy service to play around with the public data collection.

What exactly is a proxy IP?

For example, you want to go to the supermarket to buy special eggs, but the supermarket regulations can only be bought once a day per person. At this time you change a coat and then go to buy, proxy IP is this "dress up magic weapon". Through the massive IP pool provided by ipipgo, every time you visit the website, you will change your "vest" and the website will not recognize the same person.

import requests

proxies = {
    "http": "http://username:password@gateway.ipipgo.com:9020",
    "https": "http://username:password@gateway.ipipgo.com:9020"
}

response = requests.get("target site", proxies=proxies)

Data collection three big pits & crack the magic trick

The first pit: IP blocked into a sieve
With ipipgo's Dynamic Residential Proxy, the IP is automatically changed every time you visit. the measured success rate of an e-commerce platform's collection soared from 30% to 92% after using their service.

The second pitfall: the verification code is so many that you are blind
It is important to set a reasonable request interval. It is recommended to add random delays in the code and also use high stash proxies from ipipgo so that it is more difficult for the site to identify bot behavior.

Pit 3: Data formatting in bits and pieces
Recommended xpath + regular expression combination. ipipgo's API return format is particularly well organized, docking data cleaning tool is particularly convenient.

Teach you to build a collection system by hand

1. Register for a ipipgo account and selectDynamic Residential Agent Package
2. Configure proxy authentication in the code (their documentation is very clear)
3. Setting a random delay of 5-15 seconds
4. Exception handling should be well written, encounter 429 status code automatically change IP
5. Remember to de-duplicate data before storing it in the database

Practical case: e-commerce price monitoring

After a certain price comparison platform with ipipgo's proxy service:
- Average daily collection went from 10,000 to 150,000 items
- IP blocking rate drops from 70% to 3%
- Reduction in data update delay from 2 hours to 10 minutes

Frequently Asked Questions QA

Q: What should I do if my proxy IP is slow?
A: Go with ipipgo'sExclusive use of high-speed linesThe measured latency can be controlled within 200ms.

Q: Do I need to deal with CAPTCHA?
A: It is recommended to cooperate with the basic anti-CAPTCHA library, ipipgo's IP quality is high, and the probability of triggering the CAPTCHA is lower than that of ordinary proxies 40%

Q: Is data collection legal?
A: Be sure to comply with the robots agreement, ipipgo provides a compliant use of the guide, the collection of public data is no problem!

Lastly, I'd like to say, don't just look at the price of the proxy service. ipipgo's IP survival rate can reach 98%, but also support the amount of payment, especially suitable for the project is just starting out. Their customer service response thief fast, the last time I raised a work order in the middle of the night actually solved in 10 minutes, this point really praise!