?
参考：https://en.wikipedia.org/wiki/Data_bufferhttps://en.wikipedia.org/wiki/Cache_(computing)http://www.differencebetween.net/technology/hardware-technology/difference-between-cache-and-buffer/
缓存(cache)和缓冲(buffer)区别和实现
原文：http://blog.51cto.com/thinklili/2307785
