Bourne-Again

A buffer is something that has yet to be "written" to disk. A cache is something that has been "read" from the disk and stored for later use.

转载自http://blog.youkuaiyun.com/zhangerqing 设计模式（Design Patterns）                                   ——可复用面向对象软件的基础 设计模式（Design pattern）是一套被反复使用、多数人知晓的、经过分类编目的、代码设计经验的总结。使用设计模式是为了可重用代码、让代码更容易被他人