robots.txt implementation method: robots proxy bypass program

First, robots.txt in the end what the hell?

Engaged in data collection of the old iron may have encountered this situation: obviously the site can open normally, but with the program to catch the data suddenly be intercepted. At this time, nine times out of ten is triggered by the website robots.txt rules. This file is like a security guard at the door of the site, telling the crawlers which paths can enter, which to go around.

As an example, an e-commerce site's robots.txt states:

User-agent.
Disallow: /search/
Disallow: /cart/

It's clear that the crawler is not allowed to touch the search page and the shopping cart page. But if we want to collect product price information, we have to find a way to deal with this "security".

Second, proxy IP for what can break the game?

Traditional single-IP acquisition is like using the same ID card to repeatedly enter and exit the neighborhood, the security guards do not stare at you to stare at who? This time we needipipgo Dynamic Residential ProxyThis kind of magic weapon. By constantly changing your access IP address, it's equivalent to going in and out of your neighborhood in a different getup every day, so security guards can't remember your features.

There are three key points to keep in mind in practice:
1. IP purity: Don't use the same data center IPs that are being used to death!
2. Switching frequency: Adjusting to the strength of the target site's backcrawl
3. Request header camouflage: Remember to synchronize your User-Agent changes!

Third, the actual battle around the four axes

Here are a few sets that have been personally tested to work:

 Python Sample Code
import requests
from ipipgo import RotatingProxy

proxy = RotatingProxy(api_key='your_ipipgo_key')
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)'}

for page in range(1, 101): resp = requests.
    resp = requests.get(f'https://target.com/page/{page}',
                       proxies=proxy.next(), headers=headers)
                       headers=headers)
     Remember to add a random delay
    time.sleep(random.uniform(1.5, 3.0))

IV. Guide to Avoiding Potholes and Lessons Learned

Last year, I stepped into a big pit when I helped a client to do e-commerce price monitoring: although I used a proxy IP, I didn't pay attention to cookie management, and as a result, the other party recognized the crawler through the login state. Later, I changed to useipipgo's No Trace Mode ProxyThis solves the problem by automatically clearing the history trace with each request.

Common Newbie Misconceptions:
- Thinking that changing the IP is all that matters (along with requesting the header)
- Proxy IP quality not up to scratch (frequent CAPTCHA triggers)
- Acquisition intervals are too regular (to add random dithering)

V. QA time

Q: Is it legal to bypass robots.txt?
A: It is technically possible, but the compliance requirements of the target website must be adhered to. It is recommended to study the website's terms of service carefully before collection.

Q: How do I choose the type of proxy for ipipgo?
A: High-frequency acquisition choose dynamic residential agent, long-term task with static enterprise agent, need high anonymity choose deep camouflage package.

Q: What should I do if I encounter a CAPTCHA?
A: This time the size of the proxy IP pool is very important, ipipgo's ten million IP pool can effectively reduce the probability of a single IP triggering the verification code, and then with the coding platform to use better.

Q: What should I do if my proxy IP keeps dropping out?
A: It may be that you have chosen a low-quality proxy service. ipipgo provides 99.9% availability guarantee, support for real-time switching of faulty nodes, as well as professional technical customer service at any timestandby.

Sixth, say something heartfelt

In fact, now many websites are dynamic upgrades to the anti-climbing mechanism, relying on a fixed set of difficult to be effective in the long term. It is recommended to use ipipgo this kind of professional services, their intelligent routing function can automatically match the most suitable for the current website proxy strategy. Recently, their double eleven activities, buy half a year to send two months, the need for the old iron can squat a wave of discounts.

Finally, a reminder: technology is a double-edged sword, used in the right way in order to long. Let's engage in data collection to pay attention to a degree, don't make other people's websites down, then no one can play is not it?