IPC Test

gistfile1.js

var cluster = require('cluster');
var http = require('http');
var numCPUs = require('os').cpus().length;
var numReqs = 0;

if(cluster.isMaster) {
    // Fork workers.
    for(var i = 0; i < numCPUs; i++) {
        var worker = cluster.fork();
        worker.on('message', function (msg) {
            if(msg.cmd && msg.cmd == 'notifyRequest') {
                numReqs++;
            }
        });
    }
}
else {
    // Worker processes have a http server.
    http.Server(
        function (req, res) {
            res.writeHead(200);
            res.end("hello world\n");
            process.send({ cmd: 'notifyRequest' });
        }).listen(3030);
}