Database server - Node.js, Express

server.js

var express = require("express"),
    url = require('url');
var app = express();

var data = {};

app.get('/set', function(request, response) {
	var queryData = request.query;
	
	for (var i in queryData) {
		data[i] = queryData[i];
	}
	
	console.log('set');
	
	response.send();
});

app.get('/get', function(request, response) {
    var queryData = request.query;
    
	console.log('get');
		
	response.send(data[queryData['key']]);
});

app.listen(4000, function () {
  console.log('App listening on port 4000.');
});