Web Crawler IP Pool: Building and Managing a Crawler Agent IP Pool Solution

I. Why do reptiles always get pinched? Try this.

engaged in the crawler understand, the biggest headache is the target site suddenly give you aIP blocking. Last week I helped a friend to catch the e-commerce data, just run half an hour to be recognized as a robot, which feels like playing a game by the administrator kicked out of the room. This is the time to rely on proxy IP pools tomasquerading as different usersIt's like having a reptile learn to "change its face".

Traditional single-IP crawling is like using the same cell phone number to repeatedly register an account, not block you block who? My common program is to prepare200+ active IPsTake turns switching and changing "vests" each time you visit. I recently discovered that using ipipgo'sDynamic Residential IPIt's especially stable, and their home IPs are all real home broadband, which is harder to recognize than server room IPs.

Second, hand to teach you to build IP pools

First of all, a real case: a crawler project was originally blocked 3 times a day, after using the IP pool for a week without turning over. How to do it?

import requests
from itertools import cycle

 API extraction interface provided by ipipgo
proxy_list = [
    'http://user:pass@proxy1.ipipgo.com:8888',
    'http://user:pass@proxy2.ipipgo.com:8888'
]
proxy_pool = cycle(proxy_list)

for _ in range(10): proxy = next(proxy_pool)
    proxy = next(proxy_pool)
    try: response = requests.get('target url', prox_pool)
        response = requests.get('Target URL', proxies={'http': proxy})
        print('Successfully collected data')
    except.
        print(f'{proxy} failed, automatically switching to next')

Note these three key points:
1. Don't put your eggs in one basket - Mixed use of residential IP and data center IP
2. Periodic checkups - automatically check IP availability every 2 hours
3. Intelligent scheduling - automatic switching of IP types according to the anti-crawl strength of the target site

III. IP pool maintenance manual (don't let the money go down the drain)

I've seen too many people spend a lot of money on IPs and end up fracturing their results because they don't know how to maintain them. Here I share myThe four-step maintenance method::

Fourth, choose the right service provider less three years of detours

After using 7 or 8 proxy services, it's not for nothing that I ended up locking in on ipipgo. His house.TK LineThe success rate can go up to 98% in specific scenarios, which is a big step above normal IPs. Say a few practical experience:

1. The last time I needed to catch an overseas website, I used his house.cross-border rail lineSave money directly on deploying offshore servers
2. 3:00 a.m. sudden demand for customer service, actually a second response (later realized that it is a 24-hour shift)
3. Dynamic Residential Enterprise EditionSupports session hold, especially nice for collecting tasks that require logging in.

Beginners are advised to start withDynamic Residential StandardTo start, 7.67 yuan / GB enough to run a month of regular projects. Large-scale projects directly on the customized program, the last time we do public opinion monitoring, their technical small brother to design theIP rotation + request frequency controlof the portfolio program.

V. First aid kits for common problems

Q: What should I do if my proxy IP is slow?
A: First check the protocol type (Socks5 is preferred), then confirm the geographic location (select the IP where the target website is located)

Q: What should I do if I encounter CAPTCHA bombing?
A: 1. reduce the frequency of requests 2. change the type of IP (such as changing the static residential IP) 3. with automated coding tools

Q: How can I tell if the IP quality is good or bad?
A: I have a dirt method: 10 consecutive requests to https://httpbin.org/ip, counting the response rate and the number of dropouts in the middle of the process

Finally, a bloody lesson: don't buy cheap!shared IP poolThe last time I was greedy for cheap, the IP was abused by many people, and the collection efficiency was even lower. Now fixed with ipipgo's exclusive IP, although the unit price is higher, but the overall cost instead of down 40%.