Added clusters for zero-downtime.

mongoose auto-reconnect set to true.

app.js

@@ -1,7 +1,6 @@
 /**
  * Module dependencies.
  */
-var domain = require('domain');
 var express = require('express');
 var fs = require('fs');
 var flash = require('connect-flash');
@@ -26,82 +25,99 @@ var contactController = require('./controllers/contact');
 var secrets = require('./config/secrets');
 var passportConf = require('./config/passport');
 
-mongoose.connect(secrets.db);
+if (cluster.isMaster) {
+  var numCPUs = require('os').cpus().length;
 
-var app = express();
+  for (var i = 0; i < numCPUs; i++) {
+    cluster.fork();
+  }
 
-/**
+  cluster.on('disconnect', function(worker, code, signal) {
- * Express configuration.
+    console.error('worker ' + worker.process.pid + ' died');
- */
+    cluster.fork();
-app.set('port', process.env.PORT || 3000);
+  });
-app.set('views', path.join(__dirname, 'views'));
+} else {
-app.set('view engine', 'jade');
-app.use(express.favicon());
-app.use(express.logger('dev'));
-app.use(express.cookieParser());
-app.use(express.json());
-app.use(express.urlencoded());
-app.use(express.methodOverride());
-app.use(express.session({
-  secret: '0000',
-  store: new MongoStore({ db: secrets.db })
-}));
-app.use(passport.initialize());
-app.use(passport.session());
-app.use(function(req, res, next) {
-  res.locals.user = req.user;
-  next();
-});
-app.use(flash());
-app.use(less({ src: __dirname + '/public', compress: true }));
-app.use(app.router);
-app.use(express.static(path.join(__dirname, 'public')));
-app.use(function(req, res) {
-  res.status(404);
-  res.render('404');
-});
-app.use(express.errorHandler());
 
-/**
+  /**
- * Routes.
+   * Connect to MongoDB.
- */
+   */
-app.get('/', homeController.index);
+  var opts = { server: { auto_reconnect: true } };
-app.get('/login', userController.getLogin);
+  mongoose.connect(secrets.db, opts);
-app.post('/login', userController.postLogin);
-app.get('/logout', userController.logout);
-app.get('/signup', userController.getSignup);
-app.post('/signup', userController.postSignup);
-app.get('/contact', contactController.getContact);
-app.post('/contact', contactController.postContact);
-app.get('/account', passportConf.isAuthenticated, userController.getAccount);
-app.post('/account/profile', passportConf.isAuthenticated, userController.postUpdateProfile);
-app.post('/account/password', passportConf.isAuthenticated, userController.postUpdatePassword);
-app.post('/account/delete', passportConf.isAuthenticated, userController.postDeleteAccount);
-app.get('/account/unlink/:provider', passportConf.isAuthenticated, userController.getOauthUnlink);
-app.get('/api', apiController.getApi);
-app.get('/api/foursquare', passportConf.isAuthenticated, passportConf.isAuthorized, apiController.getFoursquare);
-app.get('/api/tumblr', passportConf.isAuthenticated, passportConf.isAuthorized, apiController.getTumblr);
-app.get('/api/facebook', passportConf.isAuthenticated, apiController.getFacebook);
-app.get('/api/scraping', apiController.getScraping);
-app.get('/api/github', passportConf.isAuthenticated, passportConf.isAuthorized, apiController.getGithub);
-app.get('/api/lastfm', apiController.getLastfm);
-app.get('/api/nyt', apiController.getNewYorkTimes);
-app.get('/api/twitter', passportConf.isAuthenticated, apiController.getTwitter);
-app.get('/api/aviary', apiController.getAviary);
-app.get('/auth/facebook', passport.authenticate('facebook', { scope: 'email' }));
-app.get('/auth/facebook/callback', passport.authenticate('facebook', { successRedirect: '/', failureRedirect: '/login' }));
-app.get('/auth/github', passport.authenticate('github'));
-app.get('/auth/github/callback', passport.authenticate('github', { successRedirect: '/', failureRedirect: '/login' }));
-app.get('/auth/google', passport.authenticate('google', { scope: 'profile email' }));
-app.get('/auth/google/callback', passport.authenticate('google', { successRedirect: '/', failureRedirect: '/login' }));
-app.get('/auth/twitter', passport.authenticate('twitter'));
-app.get('/auth/twitter/callback', passport.authenticate('twitter', { successRedirect: '/', failureRedirect: '/login' }));
-app.get('/auth/foursquare', passport.authorize('foursquare'));
-app.get('/auth/foursquare/callback', passport.authorize('foursquare', { failureRedirect: '/api' }), function(req, res) { res.redirect('/api/foursquare'); });
-app.get('/auth/tumblr', passport.authorize('tumblr'));
-app.get('/auth/tumblr/callback', passport.authorize('tumblr', { failureRedirect: '/api' }), function(req, res) { res.redirect('/api/tumblr'); });
 
-app.listen(app.get('port'), function() {
+  var app = express();
-  console.log('Express server listening on port ' + app.get('port'));
-});
 
+  /**
+   * Express configuration.
+   */
+  app.set('port', process.env.PORT || 3000);
+  app.set('views', path.join(__dirname, 'views'));
+  app.set('view engine', 'jade');
+  app.use(express.favicon());
+  app.use(express.logger('dev'));
+  app.use(express.cookieParser());
+  app.use(express.json());
+  app.use(express.urlencoded());
+  app.use(express.methodOverride());
+  app.use(express.session({
+    secret: '0000',
+    store: new MongoStore({ db: secrets.db })
+  }));
+  app.use(passport.initialize());
+  app.use(passport.session());
+  app.use(function(req, res, next) {
+    res.locals.user = req.user;
+    next();
+  });
+  app.use(flash());
+  app.use(less({ src: __dirname + '/public', compress: true }));
+  app.use(app.router);
+  app.use(express.static(path.join(__dirname, 'public')));
+  app.use(function(req, res) {
+    res.status(404);
+    res.render('404');
+  });
+  app.use(express.errorHandler());
+
+  /**
+   * Routes.
+   */
+  app.get('/', homeController.index);
+  app.get('/login', userController.getLogin);
+  app.post('/login', userController.postLogin);
+  app.get('/logout', userController.logout);
+  app.get('/signup', userController.getSignup);
+  app.post('/signup', userController.postSignup);
+  app.get('/contact', contactController.getContact);
+  app.post('/contact', contactController.postContact);
+  app.get('/account', passportConf.isAuthenticated, userController.getAccount);
+  app.post('/account/profile', passportConf.isAuthenticated, userController.postUpdateProfile);
+  app.post('/account/password', passportConf.isAuthenticated, userController.postUpdatePassword);
+  app.post('/account/delete', passportConf.isAuthenticated, userController.postDeleteAccount);
+  app.get('/account/unlink/:provider', passportConf.isAuthenticated, userController.getOauthUnlink);
+  app.get('/api', apiController.getApi);
+  app.get('/api/foursquare', passportConf.isAuthenticated, passportConf.isAuthorized, apiController.getFoursquare);
+  app.get('/api/tumblr', passportConf.isAuthenticated, passportConf.isAuthorized, apiController.getTumblr);
+  app.get('/api/facebook', passportConf.isAuthenticated, apiController.getFacebook);
+  app.get('/api/scraping', apiController.getScraping);
+  app.get('/api/github', passportConf.isAuthenticated, passportConf.isAuthorized, apiController.getGithub);
+  app.get('/api/lastfm', apiController.getLastfm);
+  app.get('/api/nyt', apiController.getNewYorkTimes);
+  app.get('/api/twitter', passportConf.isAuthenticated, apiController.getTwitter);
+  app.get('/api/aviary', apiController.getAviary);
+  app.get('/auth/facebook', passport.authenticate('facebook', { scope: 'email' }));
+  app.get('/auth/facebook/callback', passport.authenticate('facebook', { successRedirect: '/', failureRedirect: '/login' }));
+  app.get('/auth/github', passport.authenticate('github'));
+  app.get('/auth/github/callback', passport.authenticate('github', { successRedirect: '/', failureRedirect: '/login' }));
+  app.get('/auth/google', passport.authenticate('google', { scope: 'profile email' }));
+  app.get('/auth/google/callback', passport.authenticate('google', { successRedirect: '/', failureRedirect: '/login' }));
+  app.get('/auth/twitter', passport.authenticate('twitter'));
+  app.get('/auth/twitter/callback', passport.authenticate('twitter', { successRedirect: '/', failureRedirect: '/login' }));
+  app.get('/auth/foursquare', passport.authorize('foursquare'));
+  app.get('/auth/foursquare/callback', passport.authorize('foursquare', { failureRedirect: '/api' }), function(req, res) { res.redirect('/api/foursquare'); });
+  app.get('/auth/tumblr', passport.authorize('tumblr'));
+  app.get('/auth/tumblr/callback', passport.authorize('tumblr', { failureRedirect: '/api' }), function(req, res) { res.redirect('/api/tumblr'); });
+
+  app.listen(app.get('port'), function() {
+    console.log('Express server listening on port ' + app.get('port'));
+  });
+}