Rotation of IP address proxies: automatic switching of anti-blocking systems

How the hell does this thing prevent blocking? Let's see how it works.

Engaged in the old driver of the network crawler understand, the biggest headache is the target site suddenly give you a "blocking the number of three companies". At this timeRotation of IP proxiesIt's like giving the machine a cloak of invisibility, the principle simply put is that the server can't recognize who you are. It's like changing your face every time you go to the market, so the vendor can't find you even if he wants to kick you out.

The traditional fixed IP is like wearing the same clothes to go out, the website wind control system is very vindictive. ipipgo's dynamic IP pool has 200,000 + lines, each request randomly assigned to different regions of the export IP. a chestnut, you set up the net net every 5 minutes to change the IP, the server to see is the Beijing → Shanghai → Guangzhou users rotating access, completely unable to understand the law.

Hands-on with the automatic switching system

Here's a simple version of the rotation scheme in Python, focusing on the proxy setup part:

import requests
from itertools import cycle

 List of proxies from the ipipgo backend
proxies = [
    "http://user:pass@gateway.ipipgo.com:30001",
    "http://user:pass@gateway.ipipgo.com:30002".
     ... More Proxy Nodes
]
proxy_pool = cycle(proxies)

for _ in range(10):
    current_proxy = next(proxy_pool)
    try: current_proxy = next(proxy_pool)
        response = requests.get(
            'https://目标网站.com', proxies={"http": current_proxy}, current_proxy_pool
            proxies={"http": current_proxy},
            timeout=10
        )
        print("Request successful! Currently using IP:", current_proxy)
    except: "current_proxy", current_proxy)
        print("This IP is kneeling, automatically switch to the next one.")

Watch out for the three pits:① authorization information do not write dead code ② exception handling should be added to the timeout retry ③ remember to set the request interval, do not be like a pile driver bombardment

Why Dynamic Agents? The advantages can't be hidden

A practical guide to avoiding the pit

Recently helped a friend tune an e-commerce price monitoring system with ipipgo'sIntelligent RoutingFunctions are really fragrant. An example:

1. For a certain East access automatically go to the Beijing server room IP
2. The request of Pinyi Xixi is assigned Guangzhou mobile line.
3. Forced IP refresh for every 50 requests completed
After doing so, the collection success rate directly soared from 62% to 91%, and my friend said that I should have switched to this program long ago.

Soul torture you may have encountered

Q: Why do I still get blocked after using a proxy?
A: check three points: ① IP replacement frequency is enough ② request header has not been randomized ③ operation behavior like a real person

Q: Will dynamic IPs be slow?
A：ipipgo的BGP线路实测＜80ms，比自家宽带还稳。别贪便宜买野鸡代理就行

Q: How can I tell if the IP has really changed?
A: add a detection logic in the code, before each request to access the ipipgo verification interface, the return IP changed before counting as success!

Q: How do I choose a package for my enterprise level project?
A: According to the peak volume of business x 1.5 to choose packages, ipipgo support expansion at any time. Don't be stingy and lose more by being blocked

Lastly, the technical means is just a tool, with a reasonable business strategy to maximize the effect. As if to give you a sports car, you have to know when to step on the brakes, right? ipipgo backstage has detailed statistics on the use of the data, look at the data in order to play the rotation strategy.