Why do crawlers use proxy IP?

With the rise of the big data era, web crawler technology has become increasingly important on the Internet. Faced with massive amounts of network data, how to automatically and efficiently extract the information we need has become a big problem, and crawlers were born to solve this problem.

Generally speaking, we all need to crawl large amounts of valuable data, but a large number of crawlers will put a heavy load on the website server and cause the server to crash, so most valuable website data will have an anti-crawling system.

Anti-climb system

It has a great impact on the efficiency of crawlers, and it is easy to be banned by IP.

Regional IP restrictions

It also limits information acquisition. With the emergence of various problems, high-anonymous proxy IP has become an essential tool for web crawlers.

Why do crawlers use proxy IP?

So what are the specific benefits of high-anonymous proxy IP for crawlers?

  • High-anonymous proxies can hide real IP addresses . Anti-crawling systems usually check requests to see if users use proxy IPs. For example, the request header X-Forwarded-For of ordinary proxies will be recognized by the platform, resulting in a ban. Using high-anonymous proxies can prevent detection and banning by target websites, protecting the security and privacy of crawlers.
  • High-anonymous proxy can realize concurrent crawling of multiple IPs . Multiple IPs can disperse requests, avoid detection by anti-crawling systems, improve crawling efficiency and availability, and break through the access restrictions and anti-crawling mechanisms of a single IP.
  • High-anonymous proxies can help crawlers break through regional restrictions . For example, cross-border e-commerce companies use overseas IP addresses to access overseas websites and obtain information such as local users' preferences and shopping habits through crawlers.

In summary, high-anonymous proxy IP can solve many problems in the crawling process, whether it is request detection, IP detection or geographical restrictions, it can be easily dealt with. In terms of choosing proxy IP, although there are many agents on the market, to choose a proxy IP with high anonymity, you still need to identify agents with high quality and high user reviews.

However, as the anti-crawling system becomes more complex, websites will have various detection methods. For example, some websites will detect whether user requests are regular, check whether they contain cookies, browser information, etc. In the face of these situations, different strategies need to be formulated to solve these problems.

Of course, the high-anonymous proxy IP is still a very important tool for crawler work, which can effectively solve many crawler problems. Of course, the proxy IP is not omnipotent, and it also needs to be combined with a reasonable crawler strategy to crawl. The above is the editor's sharing, thank you for watching.

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