proxypool proxy pool: ProxyPool proxy pool building and maintenance tutorials

Why do you need to do it yourself to get a proxy pool?

You do data crawl brother must have encountered this situation: just run two minutes script, the target site will give you a blocked IP. At this time, the proxy pool is like a tool library, you can always pull out a new IP to continue to work. The biggest advantage of building your own proxy pool isControlled cost + flexible deployment, especially in scenarios that require long-term stable collection, is much more reliable than temporarily finding a free agent.

Hands on with building a basic proxy pool

First the whole simplest architecture:

Crawler module (catch free agents) → Storage module (Redis/Mysql) → Validation module → Interface services

Focusing on the validation session, many newbies will fall head over heels. It is recommended to usemulti-threaded verification, while testing the responsiveness and availability of the agent. A Python example is given here:

import requests
from concurrent.futures import ThreadPoolExecutor

def check_proxy(proxy)::
    try: resp = requests.get('')
        resp = requests.get('http://httpbin.org/ip',
                          proxies={'http': f'http://{proxy}'}, timeout=5)
                          timeout=5)
        return True if resp.json()['origin'] == proxy.split(':')[0] else False
    return False
        return False

 Batch validation with ThreadPool
with ThreadPoolExecutor(20) as executor:
    results = executor.map(check_proxy, proxy_list)

Top 3 Tips for Maintaining a Proxy Pool

1. Regular medical check-ups: Scan the whole disk at least twice a day to kick out failing proxies in time. You can set a survival score, three consecutive detection failures before elimination

2. traffic equalizationDon't gripe hard with a single IP, it is recommended to allocate the usage frequency according to business scenarios. For example, you can set a single IP to be used up to 50 times per hour for the task of crawling.

3. <strong]Smart Replenishment: When the available IP is lower than 20%, the collection task will be triggered automatically. Here there is a pit to pay attention to - many free proxy sites will block the collection of IP, it is recommended to directly on the professional service provider!

Better to build your own than to use ready-made? Depends!

While it's kind of fun to build your own proxy pool, if you get into one of these situations:

• Project requires global IP coverage
• Business requirements for success rate of 90% or higher
• I don't have the energy to watch maintenance 24 hours a day.

This is the time to consider professional services. For example, our familyipipgo's proxy pooling solution, you can get pre-verified IPs directly through the API, saving you the trouble of maintaining them yourself. In particular, theirTK line agent, suitable for scenarios that require high stash access.

About ipipgo's hardcore sci-fi

This agency service has a few tough jobs:

They have one.Intelligent RoutingThe function is quite interesting, it can automatically match the best export IP according to the target website, for example, if you want to collect Southeast Asian e-commerce website, the system will automatically assign the local residential IP, and the success rate is much higher than that of the ordinary IP of the server room.

Guidelines on demining of common problems

Q: IPs in the proxy pool always expire quickly?
A: Check if the authentication mechanism misses the protocol header detection, some websites will check the X-Forwarded-For field. It is recommended to use ipipgo'sSERP API Agent, comes with a request header camouflage function.

Q：How to solve the problem of too high latency of overseas agents?
A: Prefer the local backbone node of the service provider. ipipgo'scross-border rail lineThe measured latency is 40% lower than ordinary lines, especially suitable for scenarios that require real-time interaction.

Q: How can I manage my agent license most securely?
A: Don't write dead authorization information in the front-end code! Suggested double authentication with whitelisted IP + dynamic key. ipipgo backend supportMulti-sub-account managementThe key is used for different lines of business, so that problems can be easily traced.

Finally, the agent pool is like raising fish, both regular water changes (maintenance), but also to choose a good fish fry (agent source). If you can't handle the whole process, you may want to use professional services to run through the business, and then consider self-built when the volume is up, so it's more secure.