Crawler proxy ip use method, crawler proxy ip address

What is the use of crawler to crawl proxy ip

In recent years, with the continuous development of network technology, crawler technology has gradually become a favorable tool for network data collection. And in the crawler technology, the demand for the use of proxy ip is also more and more. So, what is the use of crawlers to crawl the proxy ip? Next, let me use simple and easy to understand language, for you to explain in detail.

What is a proxy ip?

Before we delve into what is the use of crawlers to crawl proxy ip, let's first understand what proxy ip is. Simply put, proxy ip is a kind of proxy server to forward the user request ip address, through the proxy server to forward the request can hide the real visitor ip, to achieve the purpose of anonymous access. Proxy ip is also divided into different types such as high hiding proxy, transparent proxy and universal hiding proxy. In the crawler field, we most commonly used is the high caching proxy, because it can maximize the degree of hiding our real ip.

Why do crawlers need proxy ip

Crawler as a kind of network crawling technology, its main role is to obtain all kinds of information on the Internet. But in the process of crawling, frequent visits to the target site, it is easy to cause the target site's anti-crawling mechanism, which leads to their ip is blocked, can not get the needed data. And the use of proxy ip can be a good solution to this problem. Because proxy ip can simulate a large number of different visitors ip, can effectively reduce the frequency of visits to the target site, to avoid being blocked.

What is the use of crawler to crawl proxy ip

So, what is the specific use of crawling proxy ip in the crawler? First of all, the proxy ip allows the crawler to realize distributed access and improve crawling efficiency. Secondly, it can effectively circumvent the anti-climbing mechanism of the website and reduce the risk of being banned. Once again, it can get more regional data, which is convenient for geographical information collection. In addition, it can be used to access some websites that require payment or account login, and simulate different users to access through different proxy ip.

code example

Here is an example of how a crawler can use a proxy ip to access a website in Python:

"`ipipgothon
import requests

url = 'http://www.example.com'
proxy = {
'http': 'http://127.0.0.1:8888',
'https': 'https://127.0.0.1:8888'
}

response = requests.get(url, proxies=proxy)
print(response.text)
“`

In this simple Python code, we use proxy ip to access the specified website through the requests library, so as to realize the crawling of the target website. By setting the proxy ip, we can effectively hide our real ip and achieve the purpose of crawling more safely.

concluding remarks

Through the above explanation, I believe we have a clearer understanding of what the crawler crawling proxy ip is used for. In the actual crawler application, the reasonable use of proxy ip can help us better complete the acquisition of the target data, improve the crawling efficiency, reduce the risk of being banned, is an indispensable and important part of the crawler technology. We hope that when you use proxy ip, you can abide by the network ethics, reasonable and legal operation, and jointly maintain a harmonious network environment.