Crawler Proxy IP: Professional Crawler Proxy IP Pools

A. Why is your crawler always blocked? It's this stuff that's missing!

Brothers engaged in crawling understand, hard work to write scripts running suddenly stop, in all likelihood, the IP was the site blacked out. Two days ago, I helped a friend to engage in an e-commerce price monitoring, local testing is good, a real environment immediately triggered anti-climbing - this is a typical not wearing a "vest" running naked.

This is the time to offerproxy IP poolThis big killer. As if playing a game of chicken, others are fixed targets, you every shot on a different location, the site's anti-climbing system simply can not feel the law. Like we use ipipgo, their IP pool is prepared with millions of residential agents, with the change of special worry.

Second, proxy IP pool in the end how to choose? Remember these 3 iron laws

There are all sorts of agency services on the market, but there are genuinely not many reliable ones. You have to be careful when picking one:

1. Survival time should be short enough: it's better to change the IP for every request, don't be upset about this traffic. ipipgo's dynamic pools can do it!Automatic switching per requestIt's a lot more effective than those half-hourly changes.

2. IP type should be rightThe data center IP can be used to make ordinary information station, but to climb the big platform must be on the residential IP. before a buddy cheap with a shared IP, the result is just climbed 200 pages on the blocked the whole section.

 Example of a Python call to ipipgo
import requests

proxy = {
    'http': 'http://用户名:密码@gateway.ipipgo.com:9020', 'https': 'http://用户名:密码@gateway.ipipgo.com:9020'
    'https': 'http://用户名:密码@gateway.ipipgo.com:9020'
}

response = requests.get('destination URL', proxies=proxy, timeout=10)

Third, hand to teach you to build intelligent agent pools

It's not enough to have an IP, you have to be able to schedule it. Here's a real-world scenario to share:

① Save the IPs returned by ipipgo's API into Redis, and remember to hit each IP with theSurvival timestamps

② before each request to do connectivity testing, do not wait until halfway through the climb to find that the IP hangs!

③ Encounter the response code 403/429 immediately pull the black IP, at least 2 hours to cool down and then use

④ Don't be silly and use the IPs in order, remember to add arandom pollingMechanism. Previously tested, regular visits have more than 3 times higher blocking rate than random visits

Fourth, stepping on the pit countless summarized life-saving skills

Name a few places where newbies tend to fall head over heels:

- Never leave the real User-Agent in the header, use the browser fingerprinting library provided by ipipgo to randomly generate it.

- Control the frequency of requests to havefleeting (of quick passage time)rhythm that mimics human operation. For example, randomly hibernating for 2-8 seconds after 5 consecutive visits

- Don't fight when you encounter CAPTCHA, immediately switch IP and retry. ipipgo's API response speed is fast enough, basically within 300ms to complete the switch.

V. 5 Questions You'll Surely Want to Ask

Q: What should I do if I use a proxy IP and still get blocked?
A: Check three points: 1. whether each request changes IP 2. whether the request header is random 3. whether the access interval is regular. It is recommended to go directly to ipipgo's intelligent routing function to automatically avoid high-risk IPs.

Q: Slow proxy IP speed affects efficiency?
A: It depends on the quality of the provider's line. ipipgo's BGP line has a measured latency of around 80ms, which is more than double that of many other providers. If you still think it's too slow, you can turn on theirhigh speed channel

Q: Do I need to maintain my own IP pool?
A: No need at all! ipipgo's background will automatically eliminate invalid IPs and replenish new IPs every day. our project has been running for more than half a year and we have never cleaned the pool manually!

Sixth, why specialize in agents than the comprehensive platform is reliable?

There are specialties in the art guys! Veteran vendors like ipipgo have been dying for proxy technology since 2016. Their family'sIP Purity Inspection SystemBull indeed, every IP has to pass three hurdles before going live:

1. Blacklist scanning
2. Website compatibility testing
3. Operator relationship mapping

On the other hand, those who have taken any business comprehensive platform, a lot of IP are second-hand sublet, with that is a bad. The last time I tested a large factory service, 3 out of 10 IPs have long been in the blacklist library of a treasure...

Anyway, the whole crawler thing.Proxy IPs are a lifeline.It's a good idea to have a good service provider. Choose the right service provider can really save 90% trouble, ipipgo our team tested more than two years, the peak processing 5 million requests per day has not been out of the moth. In particular, theirFail Retry + Auto SwitchMechanism, simply anti-seizure double insurance. Friends who have not yet used the agent to hurry up the whole try, absolutely open the door to a new world!