控制台命令
https://www.yiichina.com/doc/guide/2.0/tutorial-console
核心验证器
https://www.yiichina.com/doc/guide/2.0/tutorial-core-validators
收发邮件
https://www.yiichina.com/doc/guide/2.0/tutorial-mailing
性能优化
https://www.yiichina.com/doc/guide/2.0/tutorial-performance-tuning