What is a Crawler: Importance of Proxy IPs in Crawlers

What's a crawler? Let's get down to brass tacks.

To put it bluntly, the crawler is a robot that automatically gathers data. For example, you want to pull the price of a certain treasure to do price comparison, manual copy three days and three nights than to write a script to automatically catch. But the problem is - the site is not a fool, caught your IP vigorously build, minutes for you to shut down the small black room. At this time there is a need toproxy IPto be a stand-in actor and make the site think it's a different person operating.

Why proxy IPs are a lifesaver for crawlers?

To cite a real case: a price comparison of a small brother to use their own broadband to climb the data, the first three days well, the fourth day suddenly found that the site returned all the CAPTCHA. This is a typicalIP Blocked Site. After using ipipgo's Dynamic Residential Proxy, I changed IPs every 10 catches and ran for half a month straight without flipping.

import requests
from ipipgo import get_proxy This is ipipgo's secret sauce.

for page in range(1,100): proxy = get_proxy(type='residential')
    proxy = get_proxy(type='residential') Get a new residential IP every time.
    response = requests.get(
        url='https://target-site.com/products',
        proxies={'http': proxy, 'https': proxy}
    )
     Processing data logic...

The Three Fateful Things About Choosing a Proxy IP

Here's the kicker.Shelf lifeThis pit: some agents claimed low price, the results with the use of a sudden drop, crawlers directly stuck. ipipgo's unique heartbeat detection mechanism can ensure that a single IP at least 30 minutes of stability, enough for you to grab a complete list of pages.

A practical guide to avoiding the pit

The newbie's common mistakeThree Fatal Mistakes::

1. IP switching too often (the site thinks to hell with all the new users)
2. Concurrency count is too high (bringing down other people's servers)
3. No timeout to retry (just a dead loop in case of a lag)

The correct posture is to use ipipgo's smart scheduling API to automatically control the frequency of requests. TheirFailure auto retryFunctionality measured to be able to mention the collection success rate of 98% or more.

Old Driver QA Time

Q: Does proxy IP slow down the speed?
A：看质量！ipipgo的BGP中转线路，实测比还低15%，因为走了优化路由。

Q: How can I tell if a proxy is in effect?
A: Visit https://ip.ipipgo.com/check This exclusive detection page immediately shows the IP and location currently in use.

Q: How do I break the CAPTCHA when I encounter it?
A: ipipgo's enterprise version with automatic coding function, docking a number of AI recognition platform, 5 million times a month to deal with the verification code is no trouble.

Why the death of ipipgo?

Let's be honest: I tried 5 agency service providers last year and they were eitherIP Pool Filling(claiming millions of IP actually just a few thousand), either the guest costumes die. ipipgo three points strike me:

• 7 × 24 technical customer service seconds back to the work order
• Automatic replenishment of 10% new IPs every day
• Support pay-per-measure not a ruse

Recently, they had atraffic bankPlaying with the idea that unused traffic can be saved for next month is especially friendly to small and medium-sized programs.

Lastly, I would like to remind you that you have to be a good crawler! Don't catch a website to death, with ipipgo's intelligent rate adjustment, set a reasonable request interval, this is the way to sustainable data acquisition.