In the process of doing some Internet business, we often use proxy IPs. For example, when we crawl a website, if we do not cooperate with the use of proxy IPs, why is the IP often restricted?

Because the crawler will send a large number of requests to the server in a short period of time when crawling a website, which may cause the website to be paralyzed, so the anti-crawler measures are triggered, the IP is restricted, and the crawler can no longer work.

Why won't the crawler be restricted using proxy IPs? This should be done by the agent to analyze the working principle of IP.

Proxy IP is also called a proxy server, which is like a network information transfer station. It uses a new IP address instead of its own IP access and operation address. Users who use proxy IPs to access the website leave the proxy server IP. Therefore, the crawler using the proxy IP can continue to replace a new IP before the IP is restricted.

Proxy IPs are also divided into many types according to the degree of hiding. Only the best hidden proxy can ensure that the crawler is not restricted. Therefore, the reason why the crawler is not restricted using the proxy IP is not only to use the proxy IP, but more importantly, to use the correct proxy IP.