05-01.js

var http = require("http"),
  querystring = require("querystring"),
  redis = require("redis"),
  db = redis.createClient(6379, "127.0.0.1"); 

//db.set("Jaime", "Developer", function(){});

http.createServer(function(req, res) {
  var qs = querystring.parse(req.url.split("?")[1]),
    firstName = qs.firstName;
  
  db.get(firstName, function(err, lastName) {
    var userName = firstName + " " + lastName,
      html = "<!doctype html>" +
        "<html><head><title>Hello " + userName + "</title></head>" +
        "<body><h1>Hello, " + userName + "!</h1></body></html>";
    
    res.end(html);
    
  });
}).listen(8000);