(1) What is Nginx
Nginx is a [high-performance HTTP] and [reverse proxy] server, the advantages are: less memory, strong concurrency
Nginx is specially developed for performance optimization and can withstand the test of high load. There are reports that it can support up to 50,000 connections
(2) Forward proxy and reverse proxy
(1) Forward agent
In the client browser, configure the proxy server to access the Internet through the configured proxy server
For example, when we visit Google in China, we can’t directly access it. We can send a request to the proxy server through a forward proxy server. The proxy server can access Google. Then the proxy will go to Google to get the returned data, and then return it to us. Will be able to access Google
The purpose of forward proxy:
(1) Access to previously inaccessible resources, such as google
(2) Can be cached to speed up access to resources
(3) Authorize client access and go online for authentication
(4) The agent can record user access records (online behavior management) and hide user information from the outside
(2) Reverse proxy
Reverse proxy, in fact, the client is unaware of the proxy, because the client can access without configuring any proxy. We only need to send the request to the reverse proxy server, the reverse proxy server selects the target server to obtain the data, and then returns it to the client. At this time, the address of the reverse proxy server is exposed to the outside, and the ip address of the server is hidden. The client is also not aware of the existence of the reverse proxy server.
(3) Difference
The forward proxy is the client proxy, the proxy client, the server does not know the client that actually initiated the request. The
reverse proxy is the server proxy, the proxy server, the client does not know the server that actually provides the service
Reference article: https://www.cnblogs.com/taostaryu/p/10547132.html