Crunchbase crawling tool: enterprise data crawling solution

The old guard who messes with data look over here! Hands-On Proxy IP Weeding for Crunchbase

Recently, a lot of friends in the entrepreneurial circle complained to me, saying that the enterprise data on Crunchbase is coveted, but manual copying can break their hands. Don't worry, today we will nag how to use proxy IP whole job, those financing information, founder information in one pot!

Why do traditional crawlers always flop?

Anyone who has used a crawler knows that Crunchbase's anti-climbing measures are stronger than a security door. If you try hard, your IP will be blocked in less than half an hour. I've seen the most miserable buddy, a night to change 8 IP are not done, angry almost smashed the keyboard.

Major rollover points:

• Excessive request frequency immediately triggers an alert
• Continuous single-IP access will be blocked
• Dynamically loaded data can't be caught by ordinary crawlers.

The right way to open a proxy IP

Here we have to move out of our savior - ipipgo's proxy service. Their residential proxy IP is particularly suitable for this need for long-term combat scenarios, the actual test with their services for three consecutive days have not been blocked.

import requests
from itertools import cycle

 Proxy pool provided by ipipgo
proxies = [
    "http://user:pass@gateway.ipipgo:9020",
    "http://user:pass@gateway.ipipgo:9021".
     ... Prepare at least 20 IPs
]
proxy_pool = cycle(proxies)

url = "https://www.crunchbase.com/organization/example"

for _ in range(50):
    proxy = next(proxy_pool)
    try: response = requests.get(url, timeout=10)
        response = requests.get(url, proxies={"http": proxy}, timeout=10)
         Processing data logic...
    except: print(f "http": proxy)
        print(f"{proxy} hung, move to next!")

A practical guide to avoiding the pit

It's not enough to have an agent, you have to be strategic. Once I was helping a client with enterprise mapping, I realized that these configurations were particularly critical:

QA Time (Frequently Asked Questions by Old Iron)

Q: Is it legal to use a proxy IP?
A: As long as there is no sabotage, there is no problem with simply collecting public data. ipipgo's all IPs comply with local laws and regulations, so you can rest assured of that.

Q: Why is my agent always recognized?
A: It may be that the IP quality is not good. It is recommended to change the ip ipgoDynamic Residential Agents, their IP pool is updated daily with 20%, and have personally tested the detection rate to be less than 3%.

Q: What should I do if I encounter a CAPTCHA?
A: Don't do it the hard way! Immediately deactivate the current IP, wait half an hour and try again. Or go on an image recognition service, but the cost goes up.

Say something from the heart.

Last year to help a FA organization to do data collection, they began to figure cheap with free agents, the results of three days to be pulled black. After switching to ipipgo's customized package, the collection efficiency directly doubled 6 times. Especially theirIntelligent Routingfunction, can automatically avoid high-risk IP segments, this really saves your heart.

Lastly, I would like to remind you that data crawling is all about a slow and steady flow. Spread the request to different IPs, with random waiting time, even the most stable anti-climbing system can slowly grind down. If you have any specific questions, you are welcome to ask them, and they will be answered!