Cache -- OutputCache ASP.NET缓存

Myth丶恋晨 2022-04-01 14:22 245阅读 0赞

<%@ OutputCache Duration="10" VaryByParam="none" %>

Response.Write(DateTime.Now.ToString());

//==========================================================  
if (!this.IsPostBack)  
\{  
Response.Cache.SetExpires(DateTime.Now.AddSeconds(10));  
Response.Cache.SetCacheability(HttpCacheability.Public);  
Response.Cache.SetValidUntilExpires(true);  
\}  
TimeMsg.Text = DateTime.Now.ToString("G");//8/29/2007 2:40:07 PM

//==========================================================  
<caching>  
<outputCacheSettings>  
<outputCacheProfiles>  
<add name="test" duration="10" varyByParam="None"/>  
<add name="test1" duration="5" varyByParam="None"/>  
</outputCacheProfiles>  
</outputCacheSettings>  
</caching>

<%@ OutputCache CacheProfile="test1" %>

//==========================================================

<%@ OutputCache Duration="60" VaryByParam="city" %>

<tr>  
<td>  
<a href="VaryByParam.aspx?city=SZ">SuZhou</a></td>  
<td>  
<a href="VaryByParam.aspx?city=SH">ShangHai</a></td>  
<td>  
<a href="VaryByParam.aspx?city=KS">KunShan</a></td>  
</tr>  
//==========================================================  
//This page uses post cache substitution to insert a dynamic value into a cached page.

<%@ OutputCache Duration="20" VaryByParam = "none" %>

Time:  
<%= DateTime.Now.ToString() %>

Real Time:  
<% Response.WriteSubstitution(new HttpResponseSubstitutionCallback(GetCurrentDate)); %>

public static string GetCurrentDate(HttpContext context)  
\{  
return DateTime.Now.ToString();  
\}

//==========================================================  
//This page uses post cache substitution to insert a dynamic value into a cached page.

<%@ OutputCache Duration="20" VaryByParam="none" %>

Time:  
<%= DateTime.Now.ToString() %>

Real Time:  
<asp:Substitution ID="Substitution1" runat="server" MethodName="GetCurrentDate" />

//==========================================================  
//Using the Cache key Dependency

string fileDependencyPath = Server.MapPath("TextFile1.txt");  
Cache.Insert("time", DateTime.Now, new CacheDependency(fileDependencyPath));  
Response.AddCacheItemDependency("time");

// Set additional properties to enable caching.  
Response.Cache.SetExpires(DateTime.Now.AddSeconds(60));  
Response.Cache.SetCacheability(HttpCacheability.Public);  
Response.Cache.SetValidUntilExpires(true);

TimeMsg.Text = DateTime.Now.ToString("G");

//==========================================================

//Using the File Dependency

if (!this.IsPostBack)  
\{  
string fileDependencyPath = Server.MapPath("TextFile1.txt");  
Response.AddFileDependency(fileDependencyPath);

TimeMsg.Text = DateTime.Now.ToString("G");

//==========================================================  
//Cache Control

<%@ OutputCache Duration=30 VaryByControl="TextBox1" %>

<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>  
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1\_Click" />

protected void Button1\_Click(object sender, EventArgs e)  
\{  
this.Response.Write(DateTime.Now.ToString());  
\}

//==========================================================  
//Cahce WebUserControl  
//最终是根据Page设置的过期时间，本例即为10s  
Page:  
<%@ OutputCache Duration=10 VaryByParam="None" %>

<uc1:WebUserControl ID="WebUserControl1" runat="server" />

WebUserControl.ascx:  
<%@ OutputCache Duration=5 VaryByParam="None" %>

Response.Write(DateTime.Now.ToString());

[http://www.cnblogs.com/PLAYBOY840616/archive/2007/08/29/874624.html][http_www.cnblogs.com_PLAYBOY840616_archive_2007_08_29_874624.html]

[http_www.cnblogs.com_PLAYBOY840616_archive_2007_08_29_874624.html]: http://www.cnblogs.com/PLAYBOY840616/archive/2007/08/29/874624.html