I hope the explanation is easy to understand. Thank you for explaining what reverse proxy is by the way.
The answer comes from the magic Google
PM2 is a very useful Node.js service startup container. It allows you to keep your applications running forever without downtime to reload them.
Nginx is a lightweight web server. Compared with Apache, it has the advantages of less memory in possess and higher concurrency. Using epoll model, nginx is very efficient. And can be thermally upgraded.
The forward proxy is a server located between the client and the origin server. In order to obtain content from the origin server, the client sends a request to the proxy and specifies the target (the origin server). Then the proxy forwards the request to the origin server and returns the obtained content to the client.
Reverse proxy is a kind of proxy server in computer network. According to the client’s request, it obtains resources from the back-end server and then returns these resources to the client. Different from the forward proxy, the forward proxy acts as a medium to return the resources acquired on the Internet to the associated clients, while the reverse proxy acts as a proxy at the server rather than a client.