Web crawler ip pool: Python crawler agent pool configuration tutorial

Hands-on with Python to raise a stable agent pool

What do you fear most about crawlers? It's not the code reporting errors, it's that the hard-written crawler suddenly stops - the IP is blocked! It's like being kicked out of a game server and not even given a chance to reconnect. Today we will teach you how to useipipgoof proxy IP resources, build your own adamantine proxy pool.

Why do we need an agent pool?

To give a chestnut: you go to the same stall every day to buy buns, the boss will sooner or later remember you. Agent pool is to find 200 different stalls of the bun store, every day to change to buy. ipipgo home 90 million + residential IP, equivalent to the global bun store randomly pick, simply can not remember who you are.

Four Steps to Build a Proxy Pool

Step 1: Find a reliable supplier
Here's a recommendation.ipipgoThe API, dynamic and static can be selected. Their IP distribution is as wide as the spread of ipipgo, 240+ countries to choose from, all protocols support this point on the crawler is particularly friendly.

Step 2: Code Docking
With Python's requests library, it can be picked up in 10 lines of code:

import requests
def get_proxy().
    res = requests.get("API address for ipipgo")
    return f"{res.json()['ip']}:{res.json()['port']}"

Remember to add exception handling, you have to retry when the network jerks.

Step 3: Get a storage pool
We recommend using Redis as a repository, it's fast to access and you can set an expiration time. Store IPs like this:

import redis
r = redis.
r.sadd('ip_pool', '1.2.3.4:8080')

Step 4: Automatic maintenance mechanisms
1. Timed detection: IP survival is measured every 5 minutes.
2. Automatic replenishment: automatic addition of new ones when the number of IPs is lower than 50
3. Weight allocation: good IP stay longer
4. Abnormal culling: direct kicks for responses exceeding 2 seconds

Common Rollover Scene QA

Q: What should I do if my IP is always blocked?
A: Use ipipgo's dynamic residential IP, which automatically changes vests for each request, and is much more stable than using the server room IP.

Q: Agent response is fast or slow?
A: It is recommended to mix static residential IP and dynamic IP, use static for key requests and dynamic for common collection.

Q: How do I test if the proxy is valid?
A: Write a detection script to visit specific pages periodically:

def check_proxy(proxy).
    try.
        requests.get('check url', proxies={'http': proxy}, timeout=5)
        return True
    except.
        return False

Maintenance Tips

1. Don't put all your eggs in one basket, mixing IPs from multiple regions
2. Control the frequency of visits, do not let the target site that you are hungry wolves pouncing on food!
3. Don't fight with CAPTCHA, changing IP is faster than cracking.
4. Logs should be kept in detail, which IP planted heel to know exactly

Using ipipgo's proxy pool is like playing dress-up, with new faces every time out. Their IP resource pool is so large that they can cosplay global characters, and their maintenance tools are complete, so it's a lot less stressful than trying to do it yourself. Remember, the proxy pool is not built and finished, it has to be treated as an ancestor every day, and regularly maintained in order to use it smoothly.