Chapter 1: Design the application architecture
1.1 Plan the application layers
提到了repository pattern,SoC(Separation of Concern),
进而提及MVC,Action/Action results,Route/Routing (IHttpHandler, MvcHandler, IControllerFactory),Asynchronous Controllers,Views (Strongly-typed views, View-specific model, partial view, Master page),Razor/WebForms view Engine
1.2 Design a distributed application
REST service vs ASP.NET Web Services (ASMX) vs WCF Web API
通过HttpService调用REST API,(为什么不是HttpClient?)
Hybrid application - Azure server + local app server/local db server via Azure AppFabric
3种Session管理模式:InProc(default)/OutProc(StateServer or SQLServer)
1.3 Deign and implement the Windows Azure role life cycle
startup tasks management by AppCmd
1.4 Configure state management
asp.net使用ViewState来管理state信息。
asp.net mvc使用以下方式保存state信息:
- Cache - memory pool on server, shared across users
- Session - stored on server, unique for each user
- Cookie - stored on client, passed with each HTTP request to the server
- QueryString - passed as part of the URL string
- Context.Items - part of HttpContext and lasts only the lifetime of that request
- Profile - stored in db and maintains information across sessions
cookie
- 4k限制
- support feature such as Remember Me.
Html5 Web Storage
- browser compatible
1.5 Design a cache strategy
使用OutputCache属性来控制cache的范围,Location的值:Any(default)/Client/Downstream/Server/ServerAndClient/None。
Donut caching support via Substitution api of asp.net
Donut hole caching:
- 在一个返回action的方法(ChildAction)上使用OutputCache属性
- 在父View中使用@Html.Action("ChildAction")
如果在Controller上使用OutputCache属性,那么所有支持GET request的方法都具有这个属性,其他的方法不受影响。
分布式Caching要用到AppFabric,(.net版的redis应该也支持吧!)
使用System.Runtime.Caching.dll的默认实现ObjectCache/MemoryCache,来实现data caching。
Html5支持Application Cache API(AppCache),
- 生成cache manifest,
- 在Layout.cshtml中reference manifest, 如<html manifest="site.manifest">
- 设置正确的MIME-type,Response.ContentType="text/cache-manifest"。
Http caching。
1.6 Design and implement a WebSocket strategy
通过hand shake建立WebSocket连接,server端通过HttpContext.Current.AcceptWebSocketRequests(Func<AspNetWebSocketContext, Task>)完成GET到WebSocket的upgrade。
由于WebSocket不含http头信息,因此可能无法穿过firewall。
1.7 Design HTTP modules and handlers
http module和http handler的区别
熟悉asp.net mvc的default modules和handlers。
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