Proxy IP web crawling tutorial: web proxy crawling tutorial for beginners

What's the point of proxy IP crawling anyway?

To put it bluntly, now engage in data capture is like in the supermarket to grab the special eggs, everyone is crowded head. However, websites are not vegetarian, and they will block IPs without moving, which requires proxy IPs to act as "stand-ins" to make websites think that each visit is a different person. For example, to do e-commerce price comparison, public opinion monitoring these serious work, no proxy IP simply can not play.

Hands-on guide to picking a proxy tool

There are a variety of tools on the market, we have to look at the food. Beginners recommend using Python's Requests library, simple to get started. Older drivers can try the Scrapy framework, which can handle complex scenarios. Here's the kicker:Remember to add random delays to the codeDon't send requests like a machine gun, if the site doesn't block you, who will?

import requests
from time import sleep
from random import randint

proxies = {
    'http': 'http://username:password@gateway.ipipgo.com:端口', 'https': 'http://username:password@gateway.ipipgo.com:端口'
    'https': 'http://username:password@gateway.ipipgo.com:端口'
}

try.
    response = requests.get('destination URL', proxies=proxies, timeout=10)
    print(response.text)
    sleep(randint(1,3)) randomly wait 1-3 seconds
except Exception as e.
    print(f "Error: {str(e)}")

ipipgo real-world configuration secrets

After using a dozen proxy services, I ended upipipgoThe most hassle-free. His API works directly and supports HTTP/HTTPS/Socks5 protocols. Focus on a few tawdry operations:

1. Dynamic IP rotation techniques:

In the code to set the mechanism of automatic IP replacement, with ipipgo's dynamic residential package, more than 7 yuan 1G traffic enough for a month. Remember to update the proxy configuration before each request, don't let the website catch the pattern.

2. Don't be stupid with timeout settings:

I've seen some people set a timeout of 30 seconds, and the result is that the program is stuck as a dog. It is recommended that the timeout is set to 5-10 seconds, and if it fails, change the IP and retry. ipipgo's response speed is generally within 2 seconds, more than this time is basically no chance.

First Aid Guidelines for Common Rollover Scenes

Q: Why do I keep getting a connection timeout?
A: First check the proxy configuration format, especially the account password do not write the opposite. ipipgo port sub-business type, dynamic residential and static residential access ports are not the same, the official website document written clearly.

Q: What if I don't have all the data I've captured?
A: eighty percent is being anti-climbing. Try these tricks: ① change User-Agent ② reduce the frequency of requests ③ on ipipgo's TK line, specializing in dealing with difficult sites.

Q: Proxy IPs suddenly fail en masse?
A: This situation is either the target site upgrade anti-climbing, or the agent package selection is wrong. Do serious business with a residential agent, a large amount of dynamic packages, the need for a fixed IP on the static residential, 35 dollars an IP can be used for a month.

How to choose a package without wasting money

Finally nagging: do not be cheap with free agents, light data leakage, heavy account blocked. ipipgo's flexible charging model, new users are recommended to buy 10G flow first to try the water, and then renew the good use. Engaged in technology understand, stable and reliable than what is important.