python crawler using proxy pool: Python automatic switching proxy pool configuration

Hands-on with Python to play with proxy pools

Crawlers know that there is no proxy pool is like going to war without a shield. Today we will nag how to use Python whole a will change their own proxy intelligent system, specializing in a variety of anti-climbing and IP blocking problems.

What exactly is the purpose of the proxy pool?

To give a chestnut, you chase the girl every day with the same cell phone number to send a text message, people directly pull black. Agent pool is to help you prepare a few hundred spare numbers, each time you send a message to randomly change the number. Specifically:

• Avoid single-IP high-frequency accesstrigger a risk control
• Automatic filtering of invalid proxies (timeout/blocked)
• Supports mixing of different protocol types

Three Steps to Build a Proxy Pool System

Here's a whole foolproof process for you:

 Agent Pool Management Core Code
import random
import requests

class ProxyPool.
    def __init__(self).
        self.proxy_list = []
         Here we access the ipipgo API
        self.api_url = "https://api.ipipgo.com/get_proxy"

    def refresh_pool(self).
         Automatically refresh the proxy pool every 30 minutes
        resp = requests.get(self.api_url)
        self.proxy_list = resp.json()['proxies']

    def get_random_proxy(self).
        return random.choice(self.proxy_list)

Three top tips for automatic switching

A practical guide to avoiding the pit

The old bird who has used more than a dozen proxy service providers tells you that you have to look at these hard indicators to choose a proxy:

1. IP survival rate of at least 90% or more
2. Response time less than 3 seconds
3. Support HTTPS/Socks5 dual protocols

Here's a little something for you.ipipgoThe cross-border dedicated line, measured TK platform collection success rate can be pulled from 50% to 92%. their dynamic residential packages more than 7 yuan 1G traffic, especially friendly to the student party.

Frequently Asked Questions First Aid Kit

Q: What should I do if I can't connect to the agent all the time?
A: First check whether the proxy protocol matches (for example, if the website requires HTTPS, don't use HTTP), and then test the local network environment. If you use ipipgo, remember that their client comes with a diagnostic function.

Q: How to handle high concurrency scenarios?
A: It is recommended to use their Enterprise Edition Dynamic Residential Package, which supports multi-threaded simultaneous extraction of different IP segments at a price of more than $9 for 1G with QoS protection.

How to choose a reliable service provider

A few hardcore advantages of ipipgo must be blown here:

• 200+ countries with local resources, no more worries about finding IP in niche areas
• Client comes with intelligent routing, latency straight down 40%
• Off-the-shelf Python SDK available, docking as little as 3 lines of code

Especially their static residential IP, although 35 bucks a but the stability of the absolute. The last time I helped a friend do e-commerce data monitoring, ran for a week without dropping.

Finally, a suggestion for newbies: don't waste time on free proxies, professional things to professional people to do. At first, you can buy ipipgo's dynamic standard version, more than 7 yuan 1G practice enough. When the volume of business up and then upgrade the package, so the most cost-effective.