Reverse proxy is a kind of proxy server arrangement, which hides the information of the real server, receives the client's request and forwards it to the real server, and finally returns the server's response to the client. The definition and application scenarios of reverse proxy play an important role in the field of Internet technology.

Definition of reverse proxy

A reverse proxy is a proxy server that, after receiving a client request, forwards the request to a server in the internal network and returns the server's response to the client. In this process, the client cannot communicate directly with the real server, but realizes the data transmission through the reverse proxy server. The reverse proxy hides the information of the real server, improves network security, and at the same time can perform operations such as load balancing and cache optimization on the requests.

反向代理和正向代理的不同之处在于，正向代理是代理客户端向服务端请求，而反向代理则是代理服务器处理客户端的请求。正向代理一般用于绕过防火访问外部资源，而反向代理则常用于提高网站的安全性和性能。

Application Scenarios for Reverse Proxies

Reverse proxies have a wide range of application scenarios in Internet technology, the most common of which include load balancing, security protection and content acceleration. In load balancing, multiple servers form a cluster, and the reverse proxy server will distribute requests to different servers according to the load, so as to improve the overall processing capacity and stability.

In terms of security protection, the reverse proxy can be used as the first line of defense for the website, intercepting and filtering attacks to protect the security of the real server. At the same time, the reverse proxy can also be SSL acceleration and cache acceleration, to improve the site access speed and user experience.

In conclusion, reverse proxy plays an important role in Internet technology and provides strong support for website stability and performance by hiding real server information, optimizing load balancing and improving security. In practical applications, different scenarios can be configured according to the needs of different functions of the reverse proxy server to achieve the best results.