Page data capture: page proxy capture anti-blocking program

Top 3 Flopping Sites for Page Data Capture

Engage in data capture brothers understand, the most afraid is just run up the program, the IP will be pulled by the site black. There are three common ways to die:Continuous high-frequency access to be pinched(e.g. 50 requests in 1 second),Fixed IP Feature Exposure(Repeated dislikes with the same browser fingerprint),Protocol fingerprints are recognized(with Python's default UA header going straight to bare bones). All of these situations are, frankly, the site's wind control system screwing up.

Proxy IP anti-blocking practical set

First of all, a real case: an e-commerce price monitoring project, the original use of stand-alone directly connected to the collection, 3 hours must be closed IP. changed to dynamic residential agent, survival time directly pulled to 72 hours +. The doorway here is three key points:

 Python Example: Randomized Delayed Acquisition with Proxies
import requests
import random
import time

proxies = {
    'http': 'http://user:pass@gateway.ipipgo.net:9020',
    'https': 'http://user:pass@gateway.ipipgo.net:9020'
}

headers = {
    'User-Agent': random.choice(([)
        'Mozilla/5.0 (Windows NT 10.0; Win64)',
        'Mozilla/5.0 (Macintosh; Intel Mac OS X 13_4)'
    ])
}

 Randomly sleep for 0.5-3 seconds before each request
time.sleep(round(random.uniform(0.5, 3), 1))

response = requests.get('destination URL', proxies=proxies, headers=headers)

This code hides three life-saving tips:①Proxy IP automatic switching(ipipgo's gateway automatically assigns new IPs),②Request for feature camouflage(Random UA header),③Control of the pace of visits(Irregular delay). In particular, the choice of proxy gateway is more than 3 times higher with a residential IP than with a server room IP survival rate.

Agent Selection Guide for Different Scenarios

Focusing on ipipgo'sDynamic Residential PackageThe price of 7.67 yuan/GB is really fragrant. The actual test run e-commerce data, 1GB flow can catch 20,000 commodity details, the average cost per article is less than 4 cents. If you use a static residential IP is more stable, 35 bucks a month can be bound to a fixed IP, suitable for the need for long-term landing collection tasks.

A must-see anti-blocking self-checklist for the little guy

Don't panic when you encounter a blocked IP first, and troubleshoot in this order:
1. Check that the request header hasAccept-Encoding(many crawlers fall here)
2. Confirmation of each IP'sAverage daily requestsNot more than 500
3. check whether the JS rendering is complete (some sites will bury the hidden stakes)
4. Testing of IPs in different countriesSuccess rate of visits(Cutting the locale in seconds with the ipipgo client)

Frequently Asked Questions QA

Q: What should I do if my proxy IP is slow?
A: Prioritize static residential IP, the delay can be controlled within 200ms. If it is dynamic IP, set it in the codetimeout retry mechanismIf the IP address is changed after 3 seconds, the IP address will be changed automatically.

Q: What should I do if I need to collect overseas websites?
A: Directly from ipipgocross-border rail lineDon't touch those unknown international agents. Pay attention to setting the language parameter in the request header, such as collecting English sites with en-US Accept-Language.

Q: How do I choose a good deal when buying a package?
A: Test period firstDynamic Residential StandardThe company has been able to run a stable business version. Need fixed export IP business (such as social account management), directly on the static residential packages, 35 dollars to ensure that 1 month does not change the IP!

One last tasty maneuver: use the ipipgo client's ownTraffic camouflage functionThe first is to disguise the collection request as normal browsing behavior. The actual test of a recruitment website's wind control pass rate increased from 23% to 89%, the money spent is absolutely worth it.