HTTP Anonymous Crawler Agent: Job Board Job Data Collection and Talent Market Analysis

When crawlers meet job boards: the potholes we stepped on in those years

Older drivers who do data collection understand that job boards are like aVault with its own counter-surveillance system. Last week, a buddy spit out, just grabbed the post data of a certain platform, the next day the account was blocked to the mother and father. These days, website wind-control systems are better than a dog's nose.fixed IP addressIt's like posting a "Welcome to Water Meter Check" sign on your doorstep.

The right way to open a proxy IP

Trying to secure the data.camouflageIt's a must. Here's a cold one that must be said:With home broadband IP (residential IP)It's harder to recognize than the server room IP, just like an amah who blends into a food market is less noticeable than a salesman in a suit. This is the time to move outipipgoHome's best - their 90+ million real home IPs, spread across 240+ regions, are simply a natural cloak of invisibility.

Troublesome maneuvers in the real world

To give a real chestnut: an HR company wants to analyze the salary of programmers in the Yangtze River Delta, using theipipgoof Shanghai+Hangzhou+Nanjing IP combo to grab data. Here's the point!Each city IP collection automatically switches after 2 hoursIn addition, with the operation of randomly clicking on job details, it perfectly simulates the behavior of real job seekers. In the end, not only get the median salary, and even the "code words" (such as salary negotiable but require immediate arrival) of the enterprise's urgent recruitment have been analyzed.

Don't step on these minefields.

1. don't click on pages like a starving man.Recommended access interval > 3 seconds
2. Don't fight the CAPTCHA.Switch to new IP immediatelyThat's the answer.
3. 2-5 a.m. collection? The site is not a fool, this time a large number of visits directly on the red light!

Old Driver QA Time

Q: What should I do if I always get my IP blocked?
A: Check three points: ① IP pool is large enough ② switching frequency is not reasonable ③ there is no imitation of human operation. UseipipgoThe dynamic residential IP, it is recommended to change the IP every 50 requests.

Q: Collecting at a snail's pace?
A: 80% of them are using low quality proxies, tryipipgoThe full protocol support for socks5 and http proxies can be up to 30% faster by mixing them together.

Q: Data grabbing back is messy?
A: Eighty percent triggered the site's anti-climbing mechanism, remember to add the code in theRandom scrolling pagerespond in singingAnalog mouse movementoperation, don't let the site think you're automating.

Say something from the heart.

Being in this business for five or six years, I've seen too many people fall prey to IP quality. There's a lesson to be learned:Free agents are like roadside barbecues, it's pretty good when you eat it, you know it's wrong when you have diarrhea. Professionalism is still to be foundipipgoSuch veteran players, people that residential IP pool is bottomless, supporting a variety of strange and bizarre protocol needs, critical times can really save lives.

A final reminder to newcomers: collecting data is like falling in love.fig. economy will get you a long wayThat's the way to go. Don't always think of one day to get all the data, use the right proxy IP, every day to pick a little, both safe and can catch the market dynamic changes. Remember, the website wind control system is also evolving, your anti-surveillance technology must also follow the upgrade.