Capture restricted data agent: breakthrough website capture limitations program

Collecting data is always intercepted? Try this "change armor" method

Do data collection friends must have encountered this situation: just grabbed not a few pages, the site will pop up a verification code, or directly blocked your access. This is like going to the supermarket to try to eat was recognized as a peer, the shopkeeper naturally want to prevent you. This time you need to learn"Change of armor."--also known as proxy ip play.

How does the site recognize you?

Nowadays, websites have three major "eyes of fire":

1. IP address monitoring: the same ip high-frequency access must be watched
2. request characteristics identification: such as User-Agent, access to the details of the time period
3. Behavioral pattern analysis: such as the mouse track this kind of operation

Especially e-commerce platforms, the price data staring tighter than their own safe. We have tested, a well-known e-commerce platform with a fixed ip continuous access, average12 minutes.It will be blocked.

Four Steps to Create Stealth Gathering

Here's a great tip for the guys, follow it to escape the 90% blockade:

As a chestnut, write a capture script with a proxy in Python:

import requests
from fake_useragent import UserAgent

ua = UserAgent()
proxy = "http://用户名:密码@gateway.ipipgo.com:端口"

headers = {'User-Agent': ua.random}
resp = requests.get('target url',
                   proxies={"http": proxy, "https": proxy},
                   headers=headers,
                   timeout=10)

Note the use ofTunneling agent for ipipgoThe function of automatic ip change in their house is a thief to save your mind, you don't need to maintain the ip pool by yourself.

Avoid the three main pitfalls

Common mistakes made by newbies have to be paid special attention to:

1. use transparent proxy (equal to running naked)
2. request interval is too regular (robot sense of both)
3. ignore cookie tracking (the site has memory)

Before a buddy with a free proxy, the results collected all the fake data, angry almost smashed the keyboard. Later changed the ipipgoHigh Stash Agents, in conjunction with the random request header, the data accuracy is pulled right up to 98%.

interactive question-and-answer session

Q: What should I do if my proxy ip is slow?
A: Choose a proxy service that supports http2.0, like ipipgo's exclusive line, and the measured latency can be controlled within 200ms.

Q: How do I break the CAPTCHA when I encounter it?
A: Don't hard just, two programs: ① reduce the collection frequency ② on the coding platform. It is recommended to cooperate with ipipgo's intelligent switching function, triggering the CAPTCHA automatically change ip.

Q: How can I tell if an agent is highly anonymous?
A: Visit httpbin.org/ip to see the return header, if the X-Forwarded-For field appears, it is a transparent proxy. ipipipgo's all proxies have been through this test, proper high stash.

the right tool saves effort and leads better results

There are a variety of agency services on the market, so focus on these points:

√ Supports concurrent requests (don't get stuck)
√ Automatic replacement interval is adjustable (flexible response)
√ Failure retry mechanism (save effort)
√ Provide API management (easy integration)

This is a must.ipipgo's commercial level agentsThe intelligent route can automatically match the optimal node, and there is 24-hour technical support. The recently launched "Learning Mode" is even better, which can automatically adjust the collection strategy according to the target website.

Finally give a piece of advice: collect data to comply with the website's robots agreement, do not catch a website to the death grip. Reasonable use of proxy ip, both can get the data needed, and does not affect the normal operation of the site, which is the long-term plan.