Simple use of async parallel to find user and count them

async_usecase01.js

            /*-------------- Simple use of async parallel to find user and count them --------------*/

            var NoticiaModel = require('../models/noticias');
            var User = require('../models/user');
            var ObjectId = require('mongoose').Types.ObjectId;
            var async = require('async');

            exports.index = function(req, res) {
                async.parallel([
                        /*-------------- find, n=1 --------------*/
                        function(callback) {
                            NoticiaModel
                                .find()
                                .sort({ data: 'desc' })
                                .populate('_criador')
                                .exec(function(err, noticias) {
                                    callback(err, noticias);
                                });

                        }
                    ],
                    /*-------------- results from all async callbacks in results[n] --------------*/
                    function(err, results) {
                        if (err) {
                            return res.send(err);
                        }
                        User.count({}, function(err, TotalUsers) {
                            res.render('admin/admin', {
                                user: req.user,
                                noticias: results[0], // get the user out of session and pass to template
                                title: "Seja bem vindo ao ",
                                subtitle: "Visualize todas as sua notícias",
                                TotalUsers: TotalUsers
                            })
                        })
                    })
            }
            };