Redfin Crawler: Real Estate Data Collection Solution

This is probably the most tangible guide to Redfin's data crawling

Recently, many old iron is asking how to stabilize catch Redfin property data, as a passer-by must say a big truth:It's basically impossible to play without a proxy IP.。去年我团队做地产数据分析时，用自己服务器Redfin，结果刚跑两天就喜提IP小黑屋。后来用上ipipgo的住宅代理，这才真正打开了新世界大门。

Proxy IPs are your "cloak and dagger".

To put it bluntly, it is to wear a vest for the crawler, and change a new identity every time you visit. For example, Redfin's anti-climbing system is like a neighborhood gatekeeper, if you see the same person hanging around the door every day, it is strange not to call the police. With ipipgo's proxy IP pool, the equivalent of each time a different owner in and out of the neighborhood, naturally unimpeded.

import requests
from itertools import cycle

 List of proxies provided by ipipgo (example)
proxies = [
    "http://user:pass@gateway.ipipgo.com:8000",
    "http://user:pass@gateway.ipipgo.com:8001".
     ... More proxies nodes
]

proxy_pool = cycle(proxies)

for page in range(1, 101):
    current_proxy = next(proxy_pool)
    try: current_proxy = next(proxy_pool)
        response = requests.get(
            f "https://www.redfin.com/page/{page}",
            proxies={"http": current_proxy}, timeout=10
            timeout=10
        )
         Processing data logic...
    except Exception as e.
        print(f "Rollover with {current_proxy}, automatically changing to next IP")

Three Iron Rules for Choosing a Proxy IP

Delineate the focus:ipipgo's residential agent comes with real user attributesThey are especially suitable for anti-climbing strict websites like Redfin. Their IP pool is automatically updated every day with more than 20%, which is much more reliable than some service providers that don't change their IPs for half a year.

Handy Configuration Tips

1. Generate an API key in the ipipgo backend, remember to select theResidential agents + automatic rotationparadigm
2. Don't be greedy in setting request intervals, 3-5 seconds per request is recommended.
3. Don't fight with CAPTCHA, use the coding platform to cooperate with it.
4. Update 1/3 of the agent list every week to keep it fresh

Common pitfalls QA

Q: Why is it still blocked after using a proxy?
A: Eighty percent of the IP quality is not good, or the request frequency is too high. It is recommended to change to ipipgo's dynamic residential agent, their IP survival cycle is longer than the peer 30% or so.

Q: How many IPs are needed to be sufficient?
A: Look at the size of the data volume. Daily mining 10,000 articles or less, 50 IP is enough; more than 50,000 articles recommended 200 + IP pool. ipipgo's package can be expanded at any time, this point is more flexible.

Q: What should I do if I can't catch all the data?
A: It may be a JS rendering problem, on the headless browser with proxy. Remember to turn on the ipipgo consoleBrowser Fingerprint EmulationFunction.

Why recommend ipipgo

After using seven or eight proxy services, I finally locked ipipgo on three points:
1. The proportion of real residential IP is as high as 95%
2. Customer service response rate comparable to an emergency room (tested within 5 minutes)
3. Unique IP health monitoring system, automatically eliminating abnormal nodes

The last time we captured Redfin for three months straight, we used ipipgo'sIntelligent Routing Function, the success rate has remained above 98%. Once encountered a regional traffic restriction, their system automatically switched to other state nodes, completely without human intervention.

A final word from the heart: engaging in data collection is like fighting a guerrilla war.A good proxy IP is your AK47.. Instead of wasting your time on free proxies, just go straight to a professional outfit like ipipgo, and the time saved would have paid for itself long ago.