title: what is the difference between proxy server and normal server?
body: <p>Responsibility of a server is to get request and giving appropriate response to the request. Then, what is the responsibility of a proxy server? Is there any relationship between server and proxy server(i.e, if server gets overloaded, then proxy server will pretend like a server)? If it is not true, then what is the solution when the server is getting overloaded?</p>