发布时间：2013-08-05 14:36:58

每当我们讨论缓存时，总是会对如下几个词比较熟悉，Write-back,  write-through, write-around似乎，缓存主要是为“写”设计的，其实这是错误的理解，写从缓存中获得的好处是非常有限的，缓存主要是为“读”服务的。之所以我们要顺带提一下，在一个缓存系统中，如何处理写的顺序，是因为，在写的过程中.........【阅读全文】

发布时间：2013-08-05 14:35:45

Caching（缓存）在现代的计算机系统中是一项最古老最基本的技术。它存在于计算机各种硬件和软件系统中，比如各种CPU, 存储系统（IBM ESS， EMC Symmetrix…），数据库，Web服务器，中间件等。它的一个重要的作用就是用于弥补不同速度的硬件之间的存取速度的差距，cache可以完全通过硬件实现（算法也是通过硬件实现的），.........【阅读全文】

发布时间：2013-07-26 15:19:09

http://icesquare.com/wordpress/how-to-improve-zfs-performance/Recently, I built a FreeBSD server with ZFS file system using six 2TB harddisks. If you like to learn what I have done or understand more about ZFS, you can read the story here: ZFS+USB: Building a Super Large Server Using USB Me.........【阅读全文】

发布时间：2013-05-17 14:20:48

CPU cache is a commonly used method for improving processor performance by reducing the access time to memory.  Typically a CPU can have both an instruction cache to prefetch processor instructions and a data cache to speed up access to a requested piece of data.  Here, I am focusin.........【阅读全文】

发布时间：2013-05-11 11:29:47

ContextYou are working with a Web-based application that presents dynamic information to users. You have observed that many users access a specific page without the dynamic information changing.ProblemHow can you improve the response time of dynamically generated Web pages that are req.........【阅读全文】