一,内存term VAS:Virtual Address Space,是App能够申请访问的最大地址空间. Physical Memory:对SQL Server 来说,频繁访问的数据对象长时间驻留在Physical Memory中,才能达到最优的性能. Reserved Memory:申请将VAS的一段地址空间Reserve.保留的只是VAS上的一段地址,而不是真正的Physical memory. Committed Memory:对Reserved的部分 Memory Page 进行Com…

适用场景:适量的取出自己想要的数据,不是全部取出,这样性能有所加强. Take 说明:获取集合的前n个元素:延迟.即只返回限定数量的结果集. var q = ( from e in db.Employees orderby e.HireDate select e) .Take(); 语句描述:选择所雇用的前5个雇员. Skip 说明:跳过集合的前n个元素:延迟.即我们跳过给定的数目返回后面的结果集. var q = ( from p in db.Products orderby p.UnitPr…

回到目录 分页组件网上有很多,MVC.Pager,JSPager等,通过实现方式大体分为前端分页和后端分页,前端分页是前台对list内存本地集合进行分页,缺点就是在大数据情况下,内存占用过高:后端分页就是UI把要返回的页号告诉后台,由后台组织数据并返回,这种方法就是我们经常看到的了:而根据后台集合种类又可以分类List和IQueryable,前者是本地集合,在返回数据时,直接把第几页共几条的集合返回:IQueryable是预查询集合,它是Linq的产物,在很多地里它不通用,除非你的ORM框架支持…

查看ADDM(数据库版本为ORACLE 10.2.0.5.0)报告时,发现其中有个结论非常不靠谱:Significant virtual memory paging was detected on the host operating system,具体内容如下所示: FINDING 2: 100% impact (3930 seconds) ------------------------------------- Significant virtual memory paging was d…

作者:李盼(Lipan)出处:[Lipan] (http://www.cnblogs.com/lipan/)版权声明:本文的版权归作者与博客园共有.转载时须注明本文的详细链接,否则作者将保留追究其法律责任. 本篇讲解三个工具栏控件.其中Ext.toolbar.Toolbar可以用来放置一些工具类操控按钮和菜单,Ext.toolbar.Paging专门用来控制数据集的分页展示,Ext.ux.statusbar.StatusBar用来展示当前的状态信息. 一.Ext.toolbar.Toolbar…

Web Pages - Efficient Paging Without The WebGrid If you want to display your data over a number of pages using WebMatrix Beta1, you have two options. One is to use the built-in paging support that comes with the WebGrid helper. But that means that yo…

WebGrid with filtering, paging and sorting by Jose M. Aguilar on April 24, 2012 in Web Development A few days ago I received some questions on the use of the Webgrid helper in the comments section of my personal blog, specifically on how to implement…

The storage wars: Shadow Paging, Log Structured Merge and Write Ahead Logging previous: Seek, and you shall find, or maybe delay a lot next: New interview question I've been doing a lot of research lately on storage. And in general, it seems that the…

直接代码,放项目overrides文件夹中即可 //重写类 分页插件 //汉化 //默认下方布局 //默认显示额外信息 //当删除数据时,处理页面变化 Ext.define("override.toolbar.Paging", { override: "Ext.toolbar.Paging", displayMsg: '显示 {0} - {1} 条,共 {2} 条', emptyMsg: '没有要显示的数据', beforePageText: '第', afterP…

http://lightningtools.com/bcs/sharepoint-2010-external-list-paging-server-side/ When you are using an External List to display data through the Business Connectivity Services from your External Data Source you do not want to be bringing back thousand…