Forward Proxy Configuration Tutorial: Scrapy Distributed Crawler Architecture and IP Auto Switching Solution

When crawlers meet IP blocking? Try this "Shifting Shadows" technique!

Brothers engaged in crawling understand that the biggest headache is the target site suddenly give you an IP blocking. It feels like just found the treasure cave, but the hole has been sealed with cement. This time you need toproxy IPto be your pangolin, and choose the right proxy service provider is the key. Let's take ipipgo today to cite a chestnut, its residential IP pool is very deep, more than 240 regions around the world, more than 90 million real home IP, like to the reptiles equipped with countless temporary ID cards.

Teaching Scrapy how to install a "transformer".

Configuring proxies in Scrapy is actually easier than cooking bubbly, the key is to find the right middleware configuration location. Let's start by installing the essential libraries:

pip install scrapy-rotating-proxies

Then stuff these lines of code in settings.py:

ROTATING_PROXY_LIST = [
    'http://username:password@proxy.ipipgo.com:8000',
     More proxy nodes...
]

DOWNLOADER_MIDDLEWARES = {
    'rotating_proxies.middlewares.RotatingProxyMiddleware': 610,
    'rotating_proxies.middlewares.BanDetectionMiddleware': 620,
}

Note that the dynamic authentication parameters provided by ipipgo should be filled in here.All-Protocol Access, SOC5 and HTTP can play around with it. It's like installing an auto-change system for the crawler, changing the vest out of the house for each request.

How to choose Dynamic IP vs Static IP?

Choosing dynamic is like using tap water, change it as you go without any pain; choosing static is like bottled water, which is more suitable for scenes that require long-term stability. ipipgo this residential IP areReal home network environmentIt is much more reliable than the IP of the machine room, and the probability of being blocked is 80% straight down.

Answers to common pitfalls in the field

Q: What should I do if the agent often fails to connect?
A: Check that the authentication information is not written backwards, the key for ipipgo isUsername + PasswordDual Authentication. If you are using a dynamic residential IP, it is recommended that you enable the auto-retry mechanism.

Q: How can I tell if the IP is in effect?
A: Add a log output in the middleware, or directly visit http://ip.ipipgo.com/check to check the current export IP. Its API returns fast, more timely than waiting for takeout.

Q: What should I do if I encounter a website asking me to log in?
A: This is the time to use a static residential IP binding session with ipipgo'sIP Fixed Function, it's like getting a permanent pass for the crawler.

Let the reptiles learn to "get out of the way."

One final note to you, don't just change your IP, but pay attention to these details as well:
1. Request frequency control: even if the IP is changed, don't burst like a machine gun.
2. User-Agent camouflage: don't wear a browser hat on all your requests!
3. Captcha response: do not meet the verification of hard just, the use of coding platforms do not hurt the money

Combine ipipgo's proxy service with these tips, and your crawler will be able to navigate through all kinds of anti-crawling measures like a special forces soldier. Remember, a good proxy service is like an oxygen tank; it doesn't normally feel like it's there, but it can save your life in a pinch.