SSD Caching
class ApplicationController def current_user @current_user ||= User.find(session[:user_id]) end end this piece of codes are much better than the following pieces: class ApplicationController def current_user User.find(session[:user_id]) end end Because in the first part, the searching result is saved in the instance variable, next time when get the cur...
Adaptive Web caching A Collaboration between Lixia Zhang (UCLA), Sally Floyd, and Van Jacobson ( NRG , LBNL). The Adaptive Web caching project is a new DARPA-funded research project whose aim is to design and prototype implement protocols for a self-configuring, highly adaptive Web caching system that will scale to the global information infrastructure. At a later stage, the project will invest...
Hi, I'm having problem with the explorer cache... I did set this code in my jsp but unsuccess... <% response.setHeader("Cache-Control","no-cache"); response.setHeader("Pragma","no-cache"); response.setDateHeader("Expires",0); %>; after that i do a research and I found that it should set to this way... <% response.setHeader("Cache-Control","no-store"); response.setHeader("Pragma","no-cache"); resp...
我是依照RHEL4的讲解视频做的配置，编辑了chroot路径，etc目录下的named.conf，添加了下面的最后2行 options { listen-on port 53 { 127.0.0.1; }; listen-on-v6 port 53 { ::1; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.t...
caching Tutorial for Web Authors and Webmasters http://www.mnot.net/cache_docs/ web缓存的种类 1,浏览器缓存 2,代理缓存 3,网关缓存(反向代理缓存) web cache的工作过程 怎样控制web cache 本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u2/74751/showart_1839777.html
今天把caching服务器搞好了， 用的大名鼎鼎的squid, 配置文件保存在我的资源中心了。 为了这个服务， 我虚拟了三个redhat as， 一个dns， 一个web， 一个caching， 主要解决的问题是虚拟主机的设置。原理就是把web的动态页面缓存到caching服务器， 成为静态页面， 然后把dns指向caching， caching服务器监听80断口，然后把web服务的端口改为caching转向的端口。 同时还要在/etc/hosts定义要缓存的web服务的域名。 本文来自Chi...
今天装不上了，以前好好的 [root@mail usr]# rpm -ivh caching-nameserver-9.3.3-7.el5.i386.rpm warning: caching-nameserver-9.3.3-7.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186 error: Failed dependencies: bind = 30:9.3.3-7.el5 is needed by caching-nameserver-9.3.3-7.el5.i386 请大家指点 先行谢过
Since the earliest days of microprocessors, system designers have been plagued by a problem in which the speed of the CPU's operation exceeded the bandwidth of the memory subsystem to which it was connected. To avoid wasting CPU cycles while waiting for the memory to fetch the requested data, the universally adopted solution was to use an area of faster (and thus more expensive) memory to cach...
安装DNS caching-nameserver redhat-config-bind-1.9.0-13.noarch.rpm 这个包哪有下的呀！急用呀。
