
Capturing data without a proxy IP can't be done.
Brothers engaged in network crawlers understand that the target site anti-climbing mechanism more and more ruthless, ordinary IP minutes to be blocked. This time we have to rely on proxy IP to play guerrilla warfare, today we will teach you how to proxy IP and crawler robot to get a piece.
The core three axes of automated crawling
First Axe: The dynamic IP pool has to be big enough. Just like playing the game to have enough blood bottles, we have to have an IP pool that can be changed at any time. Here we must favor our own brothersipipgo, his IP pool is updated 500,000+ per day with all protocol types.
Second axe.: Be tricky with request frequency. Don't be silly with fixed requests per second, try randomized intervals (0.5-3 seconds) as a trick.
Third axe.: The request header has to be cosplayed. randomly change the User-Agent for each request to make the site think you're a different person visiting.
import requests
from bs4 import BeautifulSoup
import random
import time
def smart_crawler(url):
proxies = {
'http': 'http://user:pass@gateway.ipipgo.com:9020',
'https': 'http://user:pass@gateway.ipipgo.com:9020'
}
headers = {
'User-Agent': random.choice(UA_LIST)
}
time.sleep(random.uniform(0.5, 3))
response = requests.get(url, proxies=proxies, headers=headers)
Here's the parsing code...
Real-world case: e-commerce price monitoring robot
Recently helped a friend to get a price comparison robot, mainly to stare at the price fluctuations of a certain treasure a certain east. With ipipgo's dynamic residential proxy, with the following configuration table, stable running for two months without turning over:
| assemblies | Configuration options |
|---|---|
| IP Type | Residential Dynamic Agents |
| concurrency | 10 threads |
| request interval | 5-15 seconds random |
| fail and try again | 3 times automatic IP switching |
Frequently Asked Questions QA
Q: What can I do about slow proxy IPs?
A: First check the protocol type, with ipipgo's socks5 protocol is generally faster than http by 30%. then it is to choose a node close to the target server.
Q: How do I test the quality of the proxies?
A: It is recommended to use the test interface provided by ipipgo to directly return the anonymity and response time of the IP. You can test this way if you write your own script:
Test address = "https://test.ipipgo.com/ipinfo"
Response time = requests.get(test address, proxies=proxy).elapsed.total_seconds()
Choosing the right proxy service provider is half the battle
The market is a mixed bag of agency service providers, and it is recommended to focus on these three points:
1. Whether there is a self-built server room (ipipgo has 8 self-built server rooms in the country)
2. Whether it supports pay-per-use (newbies are advised to start with ipipgo's experience package)
3. Whether the API documentation is complete (his family documentation can even be read by elementary school students)
Finally give a piece of advice: don't be greedy and cheap with a free agent, light data leakage, heavy account is blocked. With ipipgo this regular army, out of the problem can also find customer service girl nagging, it does not smell good?

