代码量不多，但是比较实用，基本每个项目都可以用到，为了方便自己到处用。上传到npm ，有兴趣的朋友，可以看看

https://github.com/youyudehexie/lazy-loader

##使用场景

Without Lazy-loader

var sign = require('./controllers/sign');
var site = require('./controllers/site');
var user = require('./controllers/user');
var message = require('./controllers/message');
var topic = require('./controllers/topic');
var reply = require('./controllers/reply');
var rss = require('./controllers/rss');
var upload = require('./controllers/upload');
var assets = require('./controllers/static');
var tools = require('./controllers/tools');
var auth = require('./middlewares/auth');
var limit = require('./middlewares/limit');
var status = require('./controllers/status');
var github = require('./controllers/github');
var search = require('./controllers/search');

app.post('/signout', sign.signout);
app.get('/signin', sign.showLogin);
app.post('/signin', sign.login);
app.get('/active_account', sign.active_account);

// password
app.get('/search_pass', sign.showSearchPass);
app.post('/search_pass', sign.updateSearchPass);
app.get('/reset_pass', sign.reset_pass);
app.post('/reset_pass', sign.update_pass);

// user
app.get('/user/:name', user.index);
app.get('/setting', user.showSetting);
app.post('/setting', user.setting);
...
..

refer to: https://github.com/cnodejs/nodeclub/blob/master/routes.js

Lazy-loader is cool

var lazyLoader = require('lazy-loader');
var Controller = lazyLoader('./controllers');

app.post('/signout', Controller.sign.signout);
app.get('/signin', Controller.sign.showLogin);
app.post('/signin', Controller.sign.login);
app.get('/active_account', Controller.sign.active_account);

// password
app.get('/search_pass', Controller.sign.showSearchPass);
app.post('/search_pass', Controller.sign.updateSearchPass);
app.get('/reset_pass', Controller.sign.reset_pass);