How to Run Node.js Code in a Big Application? - node.js

Question

I have prepared a stand alone Node.js file (shown below). It works as expected. When I ran the code, I gave a command in a DOS window - C:......\folder_name>node file_name.js. While the server was listening, I put a URL in the browser address bar. After I finished the test, I manually terminate the Node.js code using CTRL+C.
Now, I have to do the same thing in a big project/application. And I am lost. I do not know how it works:
To run a big project/application, we simply put a URL in the browser address bar. We do not give a command in a DOS window, such as node file_name.js.
The big project/application runs on the WebLogic server and its port is 7171. Here in my stand alone Node.js code, I define a server and it listens on 8080.
To run a big project/application, I do not manually terminate a specific file.
Please help. Thank you very much.
var http= require('http'),
url = require('url'),
server;
server = http.createServer(function(req, res){
var path = url.parse(req.url).pathname;
switch (path){
case '/lens/v1/ping':
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write('The lens route works!\n');
res.end();
case '/ecrud/v1/core/ping':
res.writeHead(200, {'Content-Type': 'text/plain'});
res.write('The ecrud route works!\n');
res.end();
break;
default: send404(res);
}
});
send404 = function(res){
res.writeHead(404);
res.write('Status 404');
res.end();
};
server.listen(8080);