fibonacci.js

fibonacci.js

var express = require("express");
var cluster = require("cluster");
var processes = 7;

var listen = function(){
	var app = express();

	var fib = function (n) {
	    if (n === 0) {
		return 0;
	    } else if (n == 1) {
		return 1;
	    } else {
		return fib(n - 1) + fib(n - 2)
	    }
	};

	app.get("/:number", function (req, res) {
		var number = req.params.number;
		var result = fib(number);
		res.send("Node + Express<hr> fib("+number+"): "+result);
	});

	app.listen(8000);
}

if (cluster.isMaster)
    for(var i=0;i<processes;i++) cluster.fork();
else {
    listen();
}

package.json

{
  "dependencies": {
    "cluster": "^0.7.7",
    "express": "^4.15.2"
  }
}