page output caching and url rewriting with IHttpHandler

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Jason - 05 Jun 2006 15:45 GMT

I have page output caching setup in my web.config like this:

<outputCacheProfiles>
<add name="Static" duration="300" enabled="true" location="Server"
varyByParam="url,id" />
</outputCacheProfiles>

This works fine for most of my pages. However, I am also using a custom
http handler to do some url rewriting. This handler takes urls like:

http://www.blah.com/article/1.aspx

and maps it to

http://www.blah.com/article.aspx?url=http://www.blah.com/article/1.aspx

It doesn't look like article.aspx is caching. I have a timestamp in the
page, and if I refresh it I always get a new timestamp.

My handler implements IHttpHandler and does this:

context.RewritePath(targetUrl,string.Empty,"url=" + sourceUrl,true);
IHttpHandler handler = PageParser.GetCompiledPageInstance(targetUrl, null,
context);
handler.ProcessRequest(context);

Are there any issues with a custom http handler that would impact page
output caching?

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Luke Zhang [MSFT] - 06 Jun 2006 07:13 GMT

Hello Jason,

I build a simple test web application in VS.NEt 2005, but I didn't find
same problem. Here is my code in the customized handler:

string targetUrl = "Test.aspx";
string sourceUrl = Request.Url.ToString() ;
context.RewritePath(targetUrl, string.Empty, "url=" + sourceUrl,
true);
IHttpHandler handler =
PageParser.GetCompiledPageInstance(targetUrl, null, context);
handler.ProcessRequest(context);

<httpHandlers> section in web.config:

<httpHandlers>
<add verb="*" path="*.aspx" type="MyHandler"/>
</httpHandlers>

Code for display time:

Response.Write(System.DateTime.Now.ToLongTimeString());

I test this on a windows server 2003. Is there any difference from your
settings?

Regards,

Luke Zhang
Microsoft Online Community Support

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Paresh - 23 Jun 2006 07:47 GMT

Hi All,

I am using ASP.net 1.1.

I have used HttpHandler for UrlRewriting for this I have used
Getcompiledpageinstance method.

Now because of this my caching logic is not working.

Scenario:

When user requests http://localhost/application/abc.html.I rewrite this
url as http://localhost/other_application/xyz.aspx using
GetCompliedPageInstance method.

Now I want to cache "http://localhost/application/abc.html" Url.

Is there any way for enabling page output caching for
"http://localhost/application/abc.html" Url.

Any help in this regards will be appreciated.

Thanks in advance

> Hello Jason,
>
[quoted text clipped - 34 lines]
> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)

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page output caching and url rewriting with IHttpHandler

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