gistfile1.js

var http = require('http');
var hitCnt = 0;

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  hitCnt++;
  console.log('Server 1: ' + hitCnt);
  res.end('Server 1: ' + hitCnt + '\n');
}).listen(8124, "127.0.0.1");
console.log('Server running at http://127.0.0.1:8124/');

http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  hitCnt++;
  console.log('Server 2: ' + hitCnt);
  res.end('Server 2: ' + hitCnt + '\n');
}).listen(8125, "127.0.0.1");
console.log('Server running at http://127.0.0.1:8125/');

/*   

output for one request to each of :8214 and :8125
hitCnt is global and in scope for both servers:

dean@dean:~/Devel$ node node_try.js 
Server running at http://127.0.0.1:8124/
Server running at http://127.0.0.1:8125/
Server 1: 1
Server 1: 2
Server 2: 3
Server 2: 4

note that the browser is hitting each server with two reqs, thusly pumping
the numbers.

*/