Export Job Listings Crawler Development

Why do I have to use a proxy IP to climb a job board?

Anyone who has ever engaged in data collection knows that job boards are now in tune withlit. like protecting against a thief. You send dozens of requests in a row, minutes to your IP off the small black house. Last week, my colleagues do not believe in evil, using their own company network to climb a certain employment, the results of the entire office network was blacked out for three days - even the normal casting of resumes are popping verification code!

It's time to rely on proxy IPs tofight a guerrilla warup. It's like changing your vest every time you visit to make the site think it's being viewed by a different user. This is especially true with sites like ipipgo that offerDynamic Residential AgentsThe service, with millions of addresses in the IP pool switching randomly, is much more stealthy than using data center IPs.

Second, hand to teach you to ride the agent crawler system

Here's a specific procedure (take Python for example):

Special reminder:Don't be too regular in your request intervals! Some people like to have a fixed SLEEP of 2 seconds and get caught by the anti-crawl system. It is recommended to use a random delay, say floating between 1.5 and 4 seconds.

Third, the three major propositions of the selection of agent services

A bunch of agent service providers on the market, how to pick so as not to step on the pit? Focus on these three indicators:

1. Anonymous cascade: ipipgo's high stash of proxies will hide your real IP like a sore thumb!
2. Success ratePass on anything less than 95%, don't go cheap!
3. Geographical coverage: To be able to specify the city IP, such as specializing in climbing the Beijing post on the selection of Beijing node

I've used a certain one before that claimed to have a high stash, but it turned out to carry the X-Forwarded-For field in the header, which was directly recognized by the site. Then change ipipgoDeep anonymity modelIt took a while to get it right, they even handled the TCP handshake layer.

IV. Practical guide to avoiding pitfalls

Name a few points where newbies tend to roll over:

• Don't write dead proxy IPs in your code! Use automatic rotation mechanisms!
• Don't be tough when it comes to CAPTCHA, and don't feel bad about the money when it comes to coding platforms.
• Higher success rate of collection from 2-5am (sites with loose defenses)

Here's a tasty maneuver to try: use ipipgo'sLong-lasting session agents, keep the same IP acquisition for 10 minutes before switching. This is not as easy to be blocked as the data center IP, but also more stable than frequent switching.

V. QA session

Q: What can I do about slow proxy IPs?
A: Priority to choose the local operator line, for example, you are in Hangzhou, choose the Telecom Zhejiang node. ipipgo has aIntelligent RoutingFunction automatically selects the optimal route

Q: How do I test if the agent is valid?
A: write a timed detection script, use httpbin.org/ip interface to verify. ipipgo background actually comes with availability monitoring, do not have to build their own wheels!

Q: Will I be held legally responsible?
A: As long as you don't crawl your private data and don't engage in commercial misappropriation, there is no problem with the normal collection of public post information. Attention to comply with the website robots.txt rules

VI. Why do you recommend ipipgo?

Lastly, I'd like to say a few words: I've basically used all the proxy services on the market. Some of them are really cheap, but they won't give you any advertising code, or they will take IPs. ipipgo is the most convincing one for me.IP purity, their residential proxies are regular carrier traffic, and they rarely encounter honeypot traps when crawling the data.

Stability is so important especially when doing long term collection projects. Last month ran 15 consecutive days of recruitment data, ipipgo'sEnterprise PackageActually maintain the availability rate of 98.7%, which in the agent industry is absolutely counted as a top student. Once encountered technical problems, their engineers at two o'clock in the morning still online debugging, the service attitude is really no words.