Node js Blocking

dont-block-me.js

var http = require('http');
var exec = require('child_process').exec;

http.createServer(function (req, res) {
    res.writeHead(200, {'Content-Type': 'text/plain'});
    console.log("New request");

    // Don't block me bro!
    exec("perl -e 'sleep(60)'", function (error, stdout, stderr) {
        res.write(stdout);
        res.end();
        });
}).listen(1337);

console.log('Server running at http://127.0.0.1:1337/');