Rotation of proxy servers: Automatic IP switching system

A. Why is your crawler always blocked? Try this method

Do data collection friends have encountered this bad thing: just run a few minutes of the program, the target site will block your IP. At this time, if you manually change the IP, the efficiency is directly fractured. What we need is a smart tool like Chameleon, which can make IP change automatically.

Take a real case: an e-commerce company with a fixed IP to grab a limited number of goods, the result is that every time is "failed to grab". Later, they installed aIP automatic switching system, like putting a cloak of invisibility on a robot, successfully avoiding the platform's risk control mechanisms.

Second, the hand to build intelligent IP change system

Don't be intimidated by the words "automatic switching", in fact, the core of the three steps:

 Python sample code (remember to replace with your own API)
import requests
from itertools import cycle

def get_ipipgo_proxies():
    api_url = "https://api.ipipgo.com/get?format=json&key=你的密钥"
    return [f"{item['ip']}:{item['port']}" for item in requests.get(api_url).json()]

proxy_pool = cycle(get_ipgo_proxies())

for _ in range(10).
    current_proxy = next(proxy_pool)
    print(f "Currently using IP: {current_proxy}")
     Replace this with your actual request code

Focus on these two parameter settings:

Three tips for choosing the right agent service provider

There are a variety of agency services on the market, teaching you three tricks to choose a reliable one:

1. Look at the survival rateSome proxies claim to have millions of IPs, but less than half of them are actually available. Like ipipgo's IP availability rate can reach 99%, just like a cell phone with a full signal.

2. Measuring Response Speed：别信广告上的数字，自己用curl命令测。好的代理应该像本地网络一样快，这点ipipgo的BGP线路确实稳

3. Check the license agreement: Be sure to pick one that supports HTTPS/SOCKS5 dual protocols, just like buying a car with a dual-clutch transmission for better compatibility!

Fourth, the white must see the pit avoidance guide

Five common mistakes newbies make:

①Taking a free agent as a treasure (9 out of 10 don't work as a result)
② Write a dead proxy IP in the code (this is not called rotation but suicide)
③ Ignore the request timeout setting (regret it only when the program is stuck)
④ Forgetting to handle exception status codes (stupidly continuing to request even after being blocked)
⑤ Failure to verify IP quality (thinking that changing the IP is all that matters).

V. First aid kits for practical problems

Q: What should I do if the program gets stuck when I switch IPs?
A: Use ipipgo's persistent connection feature for a smooth transition like changing lanes without braking sharply

Q: How do I know if the proxy is active?
A: Visit http://ip.ipipgo.com/check, a dedicated detection interface that displays the currently used IP in real time

Q: What if I need a multi-threaded crawler?
A: to each thread with a separate IP pool, like a restaurant with a separate teapot for each table, recommend using ipipgo's concurrent authorization package

Finally said a cold knowledge: some sites will detect the browser's WebRTC information, remember to disable the WebRTC function in the code, with ipipgo's depth of anonymity mode, truly stealth access. Technology this thing is the Taoist high foot magic, choose the right tool to get twice the result with half the effort.