为什么code review
敏捷开发
devops http://os.51cto.com/art/201404/436798.htm http://os.51cto.com/art/201404/436824.htm https://sdarchitect.wordpress.com/2013/10/16/understanding-devops-part-6-continuous-deployment/
http://www.tuicool.com/articles/riymMb6 rolling update有点像devops中的持续交付
