Shulou(Shulou.com)06/03 Report--

This article mainly explains "how the reptile chooses the ip agent". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "how the reptile chooses the ip agent".

1. Determine which protocol agents IP are needed to support this work.

Such as HTTP, HTTPS, or Socks5.

2. Whether the quantity of IP is sufficient. When the number of IP reaches a certain number, different users can switch IP at any time.

3. IP distribution range.

IP network is spread all over the country, involving first-tier, second-tier and third-tier cities. Therefore, the HTTP proxy server and business are very large.

4. Look at IP efficiency.

There are many free IP agents on the market. Although there are many IP, it is rare to find an available IP at run time. The wiring efficiency is not high, and most of the wiring is blocked. It's best not to think about this kind of business, because it won't work at all.

Of course, staff with some crawler experience should have such experience, explicitly modify the IP, or be blocked, which talks about the security of the IP agent. According to the security performance, it can be divided into transparent agent, ordinary anonymous agent and highly anonymous agent. When using a transparent proxy, the target server can easily find it. So the editor suggests using a high-speed IP agent.

After using the IP proxy, the crawler should also adopt the correct crawling strategy, simulate human access to the server, clear cookie, and so on. Only in this way can we collect better and more effectively.

When carrying out web crawlers, there is usually a large amount of proxy IP. Because in the process of obtaining website information content, many websites have made an anti-crawler strategy, which may control the frequency of each IP. Therefore, we need a lot of agents IP to crawl the site.

Thank you for your reading, the above is the content of "how the reptile chooses the ip agent". After the study of this article, I believe you have a deeper understanding of how the reptile chooses the ip agent, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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