async.waterfall
async.series
async.parallel
async.auto
http://my.oschina.net/huangsz/blog/176203
http://blog.csdn.net/jiangcs520/article/details/17350927
http://blog.fens.me/nodejs-async/
node.js async 几个函数
+V d2h5X251bGw= 请备注：from博客园
async.waterfall
async.series
async.parallel
async.auto
http://my.oschina.net/huangsz/blog/176203
http://blog.csdn.net/jiangcs520/article/details/17350927
http://blog.fens.me/nodejs-async/