因為 SHOPUNT 的線上產品有兩千多筆，然後網站有非常頻繁的查詢
例如檢查產品是否停賣

原本的寫法是用以下方法尋找

DT.Select("Id=" & ProductId) 

後來改寫 DataTable 加上 PrimaryKey

'寫入Cache前先設定好

DT.PrimaryKey = New DataColumn() {obj.Columns("Id")} 

Dim row As DataRow = DT.Rows.Find(ProductId)

共1085筆 找出其中一筆 
Select方法  - 00:00:00.0000559
Rows.Find -   00:00:00.0000064

兩者速度差了約10倍
 

關於IIS 7 (7.5)設定動態壓縮，如何啟用這裡就不用多敘述
只是他如何判別哪些動態內容要壓縮，哪些內容不壓縮呢?
這些設定其實在 applicationHost.config 設定
位置: C:\Windows\System32\inetsrv\Config\applicationHost.config
區段:

        

<httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files">

    <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" />

    <staticTypes>

        <add mimeType="text/*" enabled="true" />

        <add mimeType="message/*" enabled="true" />

        <add mimeType="application/x-javascript" enabled="true" />

        <add mimeType="application/atom+xml" enabled="true" />

        <add mimeType="application/xaml+xml" enabled="true" />

        <add mimeType="application/json" enabled="true" />

        <add mimeType="*/*" enabled="false" />

    </staticTypes>

    <dynamicTypes>

        <add mimeType="text/*" enabled="true" />

        <add mimeType="message/*" enabled="true" />

        <add mimeType="application/x-javascript" enabled="true" />

        <add mimeType="application/json" enabled="true" />

        <add mimeType="*/*" enabled="false" />

    </dynamicTypes>

</httpCompression>

其中，<add mimeType="application/json" enabled="true" /> 是我自己加上的，不是系統預設的
當然，決定哪些靜態檔要壓縮也在 <staticTypes> 這裡設定
IIS 的 mime對應最好也加上 *.json -> application/json
 

由於遇到信用卡 return 的 Form 中文是用 big5 encode 狀況
而我們網站都是UTF-8， 因此 Request.Form 的中文內容會變成亂碼
因此必須設定網頁的 RequestEncoding 為 big5 
可惜 .NET 2.0 的 @Page 屬性無法設定 RequestEncoding， 只能由 web.config 下手
幸好 web.config 可以設定 locaion 為特定網頁或目錄設定屬性
設定如下(append 在根目錄 configuration 下即可):

  <location path="tch/Shopping/NCCReturn.aspx">

    <system.web>

      <globalization fileEncoding="utf-8" requestEncoding="big5" responseEncoding="utf-8" culture="zh-TW"/>

    </system.web>

  </location>

今天去亞卡讀書會剛好有提到跨站的 ajax
除了JSONP之外，其實W3C也有訂標準
http://www.w3.org/TR/cors/
https://developer.mozilla.org/zh-TW/docs/HTTP/Access_control_CORS
基本精神就是
A網站呼叫B網站
A網站的Request Header要加上 Origin: (這個瀏覽器會自動加上)
B網站Response Header要加上一些 Access-Control-Allow-Origin:
這樣就可以通了 不過Request並不會帶上B網站的cookies
若是希望 Request 時也要送上 cookies 資訊，則http物件要加上 .withCredentials = true
不過 IE7以下確定是不支援這的機制，IE8以上則還要測看看

 

提供者選項中 'compilerVersion' 屬性的值必須是 'v4.0' 以上 (如果要針對 4.0 版以後的 .NET Framework 編譯)。若要針對 3.5 (含) 以後版本的 .NET Framework 編譯這個 Web 應用程式，請從 Web.config 檔案的 <compilation> 項目移除 'targetFramework' 屬性。

<system.codedom>

    <compilers>

     <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CSharp.CSharpCodeProvider,System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">

        <providerOption name="CompilerVersion" value="v4.0"/>

        <providerOption name="WarnAsError" value="false"/>

     </compiler>

     <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" warningLevel="4">

        <providerOption name="CompilerVersion" value="v4.0"/>

        <providerOption name="OptionInfer" value="true"/>

        <providerOption name="WarnAsError" value="false"/>

     </compiler>

    </compilers>

</system.codedom>

相關專案: 光寶

查了監控 snmp 的套件，還是 mrtg 最簡單，做個紀錄一下

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先安裝 windows server snmp 服務，啟動​並進行設定

可參考：http://blog.faq-book.com/?p=1799
設定 public 的地方需輸入，會與 mrtg 的設定有關

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安裝 ActivePerl，並下載解壓 mrtg 到任意目錄
官網：http://mrtg.cs.pu.edu.tw/download.en.html

這裏以 c:\mrtg 為例

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設定 c:\mrtg\bin\127.0.0.1.cfg, 並執行 c:\mrtg\bin\perl mrtg 127.0.0.1.cfg 可跑一次
會產生 html&圖 到 WorkDir: 下，再設成 iis web 即可

c:\mrtg\bin\127.0.0.1.cfg 範例

#設為背景服務

RunAsDaemon: no



#統計間隔(預設5分鐘 Interval:5)

Interval:5



#網頁訊息中文顯示

Language: big5



#瀏覽器重新讀取間隔(預設Refresh:300秒)

Refresh:300

WorkDir: c:\inetpub\wwwroot\mrtg

EnableIPv6: no



########################################################

# 127.0.0.1 CPU Loading

########################################################

Target[127.0.0.1-cpu]: .1.3.6.1.2.1.25.3.3.1.2.1&.1.3.6.1.2.1.25.3.3.1.2.2:public@127.0.0.1

Title[127.0.0.1-cpu]: CPU Loading

PageTop[127.0.0.1-cpu]: </code><h1>CPU Loading - 127.0.0.1</h1>

Colours[127.0.0.1-cpu]: R#ff4f27,Y#FFFF00,,R#ff4f27,Y#FFFF00

MaxBytes[127.0.0.1-cpu]: 100

Options[127.0.0.1-cpu]: gauge, nopercent, growright

Directory[127.0.0.1-cpu]: 127.0.0.1

YLegend[127.0.0.1-cpu]: CPU loading (%)

ShortLegend[127.0.0.1-cpu]: %

Legend1[127.0.0.1-cpu]: CPU1 負載

Legend2[127.0.0.1-cpu]: CPU2 負載

LegendI[127.0.0.1-cpu]: CPU1 負載

LegendO[127.0.0.1-cpu]: CPU2 負載

[127.0.0.1-cpu] 為產生檔名
Directory[127.0.0.1-cpu]: 127.0.0.1 會建立 127.0.0.1 的目錄來放 html&圖

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建立 bat 排程每五分跑一次即可

mrtg.bat

perl mrtg 192.168.0.10.cfg

perl mrtg 192.168.0.20.cfg



rem 幫你建立 index.html

perl indexmaker --output c:\inetpub\wwwroot\mrtg\index.html 192.168.0.10.cfg 192.168.0.20.cfg

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較麻煩的是 Target 的設定，為 snmp 的節點值，跟效能監視器裏的項目有點像

查到的較有用的
CPU Loading
Target[127.0.0.1-cpu]: .1.3.6.1.2.1.25.3.3.1.2.1&.1.3.6.1.2.1.25.3.3.1.2.2:public@127.0.0.1
其中 .1.3.6.1.2.1.25.3.3.1.2 固定，.1 .2 隨不同機器的 cpu 數 .3 .4 都有可能

Current Connections
Target[192.168.0.10-webusers]: .1.3.6.1.4.1.311.1.7.3.1.13.0&.1.3.6.1.4.1.311.1.7.3.1.14.0:public@127.0.0.1

Network Usage
Target[192.168.0.10-network]: \Realtek\ PCIe\ GBE\ Family\ Controller:public@127.0.0.1
這裏都會跟網卡名綁，通常用執行
perl cfgmaker --global "WorkDir: c:\inetpub\wwwroot\mrtg" --ifref=descr --ifdesc=descr public@127.0.0.1 --output network.cfg
它會幫你跑一遍路的節點，再挑出來用即可

Cpu 溫度找不到內建通用的，要安裝第三方套件，開其它篇寫

查到最完整的第三方提供 snmp 統整節點，但要錢，免費版節點很少，也沒有溫度
http://www.snmp-informant.com/
http://www.snmp-informant.com/products/std/snmp-informant-std-tree.htm 免費版節點

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結果圖








 

A Domain 底下有一個 B Domain 的 iFrame，B Domain 在client 有對自己的domain 設些cookie，
但 IE cookie 寫不進去，

原因如下面網址: http://www.cr173.com/html/16696_1.html
加入這行 IE 就好囉!   Response.AddHeader("P3P", "CP=CAO PSA OUR")

• How to Use HTML5 File Drag & Drop
• How to Open Dropped Files Using HTML5 and JavaScript
• How to Asynchronously Upload Files Using HTML5 and Ajax
• How to Create File Upload Progress Bars in HTML5 and JavaScript

這幾篇文章提到使用拖拉方式將檔案放到網頁裡面
然後在本地端預覽，然後ajax上傳，上傳時還有 progress bar
一整套運作模式說明，並附上sample code，挺棒的
附檔sample code

-------------------------------------------
測試後補充:
1. 範例中的 dragover event 要改成 dragenter 比較正確
然後 dragover 最好是做成 return false (ev.stopPropagation())
2. Server端不能用Requst.Files收檔案，要直接處理 Request.InputStream另存成檔案

 

從 http://blog.ie-soft.de/post/2007/12/globalasax-events.aspx  抄來的. 留作參考

HttpApplication Events:

Application_AcquireRequestState
Occurs when ASP.NET acquires the current state (for example, session state) that is associated with the current request. 

Application_AuthenticateRequest
Occurs when a security module has established the identity of the user. 

Application_AuthorizeRequest
Occurs when a security module has verified user authorization. 

Application_BeginRequest
Occurs as the first event in the HTTP pipeline chain of execution when ASP.NET responds to a request. 

Application_Disposed
Adds an event handler to listen to the Disposed event on the application. 

Application_EndRequest
Occurs as the last event in the HTTP pipeline chain of execution when ASP.NET responds to a request. 

Application_Error
Occurs when an unhandled exception is thrown. 

Application_PostAcquireRequestState
Occurs when the request state (for example, session state) that is associated with the current request has been obtained. 

Application_PostAuthenticateRequest
Occurs when a security module has established the identity of the user. 

Application_PostAuthorizeRequest
Occurs when the user for the current request has been authorized. 

Application_PostMapRequestHandler
Occurs when ASP.NET has mapped the current request to the appropriate event handler. 

Application_PostReleaseRequestState
Occurs when ASP.NET has completed executing all request event handlers and the request state data has been stored. 

Application_PostRequestHandlerExecute
Occurs when the ASP.NET event handler (for example, a page or an XML Web service) finishes execution. 

Application_PostResolveRequestCache
Occurs when ASP.NET bypasses execution of the current event handler and allows a caching module to serve a request from the cache. 

Application_PostUpdateRequestCache
Occurs when ASP.NET completes updating caching modules and storing responses that are used to serve subsequent requests from the cache. 

Application_PreRequestHandlerExecute
Occurs just before ASP.NET begins executing an event handler (for example, a page or an XML Web service). 

Application_PreSendRequestContent
Occurs just before ASP.NET sends content to the client. 

Application_PreSendRequestHeaders
Occurs just before ASP.NET sends HTTP headers to the client. 

Application_ReleaseRequestState
Occurs after ASP.NET finishes executing all request event handlers. This event causes state modules to save the current state data. 

Application_ResolveRequestCache
Occurs when ASP.NET completes an authorization event to let the caching modules serve requests from the cache, bypassing execution of the event handler (for example, a page or an XML Web service). 

Application_UpdateRequestCache
Occurs when ASP.NET finishes executing an event handler in order to let caching modules store responses that will be used to serve subsequent requests from the cache. 

Application_Init
This method occurs after _start and is used for initializing code. 

Application_Start
As with traditional ASP, used to set up an application environment and only called when the application first starts.

Application_End
Again, like classic ASP, used to clean up variables and memory when an application ends.

Session Events:

Session_Start
As with classic ASP, this event is triggered when any new user accesses the web site.

Session_End
As with classic ASP, this event is triggered when a user's session times out or ends. Note this can be 20 mins (the default session timeout value) after the user actually leaves the site.

Profile Events:

Profile_MigrateAnonymous
Occurs when the anonymous user for a profile logs in.

Passport Events:

PassportAuthentication_OnAuthenticate
Raised during authentication. This is a Global.asax event that must be named PassportAuthentication_OnAuthenticate.
 

Possibly more events defined in other HttpModules like:

System.Web.Caching.OutputCacheModule
System.Web.SessionState.SessionStateModule
System.Web.Security.WindowsAuthentication
System.Web.Security.FormsAuthenticationModule
System.Web.Security.PassportAuthenticationModule
System.Web.Security.UrlAuthorizationModule
System.Web.Security.FileAuthorizationModule
System.Web.Profile.ProfileModule