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摘要: 前端是庞大的,包括HTML、CSS、Javascript、Image、Flash等等各种各样的资源。前端优化是复杂的,针对方方面面的资源都有不同的方式。那么,前端优化的目的是什么?1. 从用户角度而言,优化能够让页面加载得更快、对用户的操作响应得更及时,能够给用户提供更为友好的体验。2. 从服务商角度而言,优化能够减少页面请求数、或者减小请求所占带宽,能够节省可观的资源。总之,恰当的优化不仅能够改善站点的用户体验并且能够节省相当的资源利用。前端优化的途径有很多,按粒度大致可以分为两类,第一类是页面级别的优 化,例如HTTP请求数、脚本的无阻塞加载、内联脚本的位置优化等;第二类则是代码级别的优化 阅读全文
posted @ 2011-03-25 08:16 Rickie 阅读(789) 评论(1) 推荐(0) 编辑
摘要: ASP.NET Open Source Projectshttp://wiki.asp.net/page.aspx/388/aspnet-open-source-projects/有大量基于.NET Framework 开发的开源项目。 另外还推荐几个开源的ASP.NET MVC 项目:(1)Orchard 项目 http://orchard.codeplex.com/(2)The Beer House CMS and E-Commerce applicationhttp://thebeerhouse.codeplex.com/(3)mytrip.mvc 项目http://mytripmvc. 阅读全文
posted @ 2011-03-22 22:09 Rickie 阅读(598) 评论(0) 推荐(0) 编辑
摘要: 网页的缓存是由HTTP消息头中的“Cache-control”来控制的,常见的取值有private、no-cache、max-age、must-revalidate等,默认为private。其作用根据不同的重新浏览方式分为以下几种情况: (1) 打开新窗口 如果指定cache-control的值为private、no-cache、must-revalidate,那么打开新窗口访问时都会重新访问服务器。而如果指定了max-age值,那么在此值内的时间里就不会重新访问服务器,例如: Cache-control: max-age=5 表示当访问此网页后的5秒内再次访问不会去服务器 (2) 在地址栏回 阅读全文
posted @ 2011-03-22 19:35 Rickie 阅读(3294) 评论(0) 推荐(0) 编辑
摘要: 一、什么是高可用(High Availability) 在高可用的解释方面,有人给出了如下的诠释: (1)系统失败或崩溃 (system faults and crashes) (2)应用层或者中间层错误 (application and middleware failures) (3)网络失败 (network failures) (4)介质失败,一般指存放数据的媒体故障 (media failures) (5)人为失误 (Human Error) (6)容灾 (Disasters and extended outages) (7)计划宕机与维护 (Planned downtime, mai 阅读全文
posted @ 2011-03-20 02:44 Rickie 阅读(1826) 评论(0) 推荐(0) 编辑
摘要: ORACLE 数据库容灾复制解决方案share Plex SharePlex® 是业界最成熟的高性能/高可用性数据复制解决方案。具有网络占用少、配置灵活、准实时复制等特点,可以解决关键应用的多种可用性问题。推出五年来,该产品 技术已经被世界各地大量的用户成功实施,成为企业应用底层最成熟、最领先的高可用性数据复制解决方案。 通过Redo Log俘获数据变化 用户对数据对象的更新,一旦写入Oracle日志,就可被SharePlex的俘获机制快速捕捉,即使该事务可能尚未执行。SharePlex实现了复制 速度和数据准确性的完美统一。它完全遵从读一致性原则,目标例程是源数据库的精确展现。没有 阅读全文
posted @ 2011-03-20 02:09 Rickie 阅读(835) 评论(0) 推荐(0) 编辑
摘要: Cacti 在英文中的意思是仙人掌的意思,Cacti是一套基于PHP,MySQL,SNMP及RRDTool开发的网络流量监测图形分析工具。它通过 snmpget来获取数据,使用 RRDtool绘画图形,而且你完全可以不需要了解RRDtool复杂的参数。它提供了非常强大的数据和用户管理功能,可以指定每一个用户能查看树状结 构、host以及任何一张图,还可以与LDAP结合进行用户验证,同时也能自己增加模板,功能非常强大完善。 下图是cacti运行的主界面 Cacti 架构图: 阅读全文
posted @ 2011-03-19 18:35 Rickie 阅读(645) 评论(0) 推荐(0) 编辑
摘要: Suppose you want to use http://XXX/aa-bb as your displayed url, but you want to remove the extension from your URL and the actual URL is http://XXX/aa-bb.aspx. You can write some codes by yourself to implement URL Rewriting feature. But there is a problem. The code only works on dev box.when hosted 阅读全文
posted @ 2011-03-10 22:37 Rickie 阅读(326) 评论(0) 推荐(0) 编辑
摘要: This article describes the life cycle of the page from the moment the URL is hit from the web browser till the HTML code is generated and sent to the web browser. Let us start by looking at some keywords that are involved in the life cycle of the page. 阅读全文
posted @ 2008-04-29 10:32 Rickie 阅读(1846) 评论(0) 推荐(0) 编辑
摘要: 为 SQL Server 启用 AWE 内存 阅读全文
posted @ 2008-04-25 16:15 Rickie 阅读(1600) 评论(0) 推荐(0) 编辑
摘要: PAGEIOLATCH_SH: Occurs when a task is waiting on a latch for a buffer that is in an I/O request. The latch request is in Shared mode. 阅读全文
posted @ 2008-03-20 11:46 Rickie 阅读(3143) 评论(0) 推荐(0) 编辑
摘要: CXPACKET: Occurs when trying to synchronize the query processor exchange iterator. You may consider lowering the degree of parallelism if contention on this wait type becomes a problem. 阅读全文
posted @ 2008-03-18 18:40 Rickie 阅读(10913) 评论(0) 推荐(0) 编辑
摘要: IntroductionThis topic describes the elements in the Web.config file that support Microsoft ASP.NET AJAX. It also describes how to incorporate those elements into the Web.config file for an existing A... 阅读全文
posted @ 2008-03-12 13:12 Rickie 阅读(756) 评论(0) 推荐(0) 编辑
摘要: If you have installed TFS and have notconfigured your SMTP server, you may do so as follows:On the Team Foundation Server box, navigate to: C:\Program Files\Microsoft Visual Studio 2005 Team Foundatio... 阅读全文
posted @ 2008-03-12 08:56 Rickie 阅读(720) 评论(0) 推荐(0) 编辑
摘要: 日志的逻辑文件名是DBNAME_LOG,数据库DBNAME: USE DBNAME BACKUP LOG DBNAME WITH NO_LOG --截断事务日志 GOOPTION 1:DBCC SHRINKFILE(DBNAME_LOG,10) --收缩事务日志 GO OPTION 2:企业管理器--右键你要压缩的数据库--所有任务--收缩数据库--收缩文件--选择日志文件--在收缩方式里选择收缩... 阅读全文
posted @ 2008-02-22 10:12 Rickie 阅读(1328) 评论(0) 推荐(0) 编辑
摘要: A couple of strange warnings in the Security event log always occur when then transaction fails:Log 1:Event Type:Failure AuditEvent Source:SecurityEvent Category:Account Logon Event ID:680Date:2008-2-... 阅读全文
posted @ 2008-02-20 11:01 Rickie 阅读(929) 评论(0) 推荐(0) 编辑
摘要: The following SQL statement is used to reconfigure the SQL SERVER advanced settings, such as max text repl size. sp_configure 'max text repl size', 2147483647GORECONFIGURE;You can also configure this ... 阅读全文
posted @ 2008-02-02 13:58 Rickie 阅读(693) 评论(0) 推荐(0) 编辑
摘要: ChannelFactoryThe following example illustrates how to use the ChannelFactory class to create a channel on the client to send messages with the service endpoint.In order to create and manage channels,... 阅读全文
posted @ 2008-01-31 18:33 Rickie 阅读(1599) 评论(0) 推荐(0) 编辑
摘要: WCF configuration file The configuration file in the host application follows the same format as the configuration file in the client application. There is a section where the bindings are defined ... 阅读全文
posted @ 2008-01-23 18:22 Rickie 阅读(447) 评论(0) 推荐(0) 编辑
摘要: 在Windows NT/2000/XP的计算机中,Cookies文件的存放位置为C:\Documents and Settings\用户名\Cookies。硬盘中的Cookies文件可以被Web浏览器读取,它的命令格式为:用户名@网站地址[数字].txt。如一个Cookies文件名为:ch@163[1].txt。要注意的是:硬盘中的Cookies属于文本文件,不是程序。 阅读全文
posted @ 2008-01-16 09:53 Rickie 阅读(359) 评论(0) 推荐(0) 编辑
摘要: How to: Rename a Computer that Hosts a Stand-Alone Instance of SQL Server 2005 1. For a renamed default instance, run the following procedures:Get SQL SERVER NAME: select @@servername sp_dropserver GO... 阅读全文
posted @ 2008-01-10 09:41 Rickie 阅读(477) 评论(0) 推荐(0) 编辑
摘要: Menu bar/Toolbar Missing in Windows Explorer and/or Internet ExplorerThis issue is a little boring. You can figure it out according to the steps in the following article.http://support.microsoft.com/k... 阅读全文
posted @ 2007-10-09 17:04 Rickie 阅读(634) 评论(3) 推荐(0) 编辑
摘要: RGB Color ChartHave a great time creating your HTML pages with great colors!Navigate to the following URL to get more.http://www.tayloredmktg.com/rgb/ 阅读全文
posted @ 2007-10-08 11:04 Rickie 阅读(571) 评论(0) 推荐(0) 编辑
摘要: How to: Make Thread-Safe Calls to Windows Forms Controls URL: ms-help://MS.VSCC.v80/MS.MSDN.v80/MS.VisualStudio.v80.en/dv_fxmclictl/html/138f38b6-1099-4fd5-910c-390b41cbad35.htm Access to Windows Form... 阅读全文
posted @ 2007-10-06 00:21 Rickie 阅读(1292) 评论(0) 推荐(0) 编辑
摘要: Transact SQL User-Defined Functions in SQL Server 2005 阅读全文
posted @ 2007-09-29 11:23 Rickie 阅读(689) 评论(1) 推荐(0) 编辑
摘要: Check Page Rank of any web site pages instantlyNavigate to the following URL to check the page rank of any web site:http://www.prchecker.info/check_page_rank.php 阅读全文
posted @ 2007-09-24 09:56 Rickie 阅读(931) 评论(0) 推荐(0) 编辑
摘要: Usually these errors appear in the web farm deployment when the spiders come through the site and they try to request pages with invalid ViewState, etc. Most likely they are trying to reference an old version of the .axd file because they are built dynamically and timestamped for authenticity. 阅读全文
posted @ 2007-09-20 14:37 Rickie 阅读(5783) 评论(0) 推荐(0) 编辑
摘要: [Exception] – Could not load file or assembly App_Web_*** ASP.NET 阅读全文
posted @ 2007-08-23 16:28 Rickie 阅读(1716) 评论(0) 推荐(0) 编辑
摘要: One tip for javascript to invoke variables in asp.net web page Here’s what I used in an asp.net web page. NO TITLE "> …… This will raise the following error: The Controls collection can... 阅读全文
posted @ 2007-08-17 19:28 Rickie 阅读(587) 评论(0) 推荐(0) 编辑
摘要: THE LONG TAIL Why the Future of Business Is Selling Less of More 阅读全文
posted @ 2007-07-07 20:50 Rickie 阅读(1002) 评论(3) 推荐(0) 编辑
摘要: An Introduction to SQL Server Service Broker Author: Roger Wolter Published: February, 2005 Summary: This paper introduces Service Broker, a new feature in Microsoft SQL Server 2005. With Service Brok... 阅读全文
posted @ 2007-07-02 21:55 Rickie 阅读(515) 评论(0) 推荐(0) 编辑
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