RE: ASP.Net Caching

Thank you for the excellent response.

Yes, my question pertains to the caching of the AJAX scripts on the client.

Regarding the "check for newer versions for the stored page" setting, when
it is set to "Never", the AJAX scripts are NOT downloaded everytime.
Otherwise, they seem to be. What setting do you recommend?

I'll try the Web Development Helper when I return from vacation.

Thanks!
"Steven Cheng [MSFT]" wrote:

Hi Dave,

Have you got any progress on this issue or does the suggestion in previous
message help some?

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


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Content-Transfer-Encoding: 7bit
From: stcheng@xxxxxxxxxxxxxxxxxxxx (Steven Cheng [MSFT])
Organization: Microsoft
Date: Mon, 28 Jul 2008 03:46:54 GMT
Subject: RE: ASP.Net Caching

Hi Dave,

From your description, the "Caching" you mentioned here is the cache of
the
AJAX client script rather than ASP.NET server-side output cache, correct?

As for client-side scripts or other static resource's caching, it mostly
depend on the client-browser's interpretion of the resources(whether it
detect any change in the url or the httpheader's last modified value
changed). Also, there is specific configuration in client browser to
customize it. For example, you can change the behavior in IE via the
following setting:

**Tools-->internet options---> "General Tab"

**In the "Browsing history" section, click " Settings" button

You'll find the "check for newer versions for the stored page" item

Also, for the behavior you saw, I suspect that whether it is also related
to the webtest tools which may generate some additional header or url
querystring which make the server-side emit different script url for the
AJAX script. This may also make the client browser think the file need
update. Anyway, you can use "Web Development Helper" tool to watch the
behavior when you manually do postback operations on the AJAX page. Based
on my test, for normal AJAX postback, the script resoures are not download
everytime.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead


Delighting our customers is our #1 priority. We welcome your comments and
suggestions about how we can improve the support we provide to you. Please
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From: =?Utf-8?B?RGF2ZQ==?= <daveII@xxxxxxxxxxxxx>
Subject: ASP.Net Caching
Date: Fri, 25 Jul 2008 11:39:01 -0700


I'm using ASP.Net with an UpdatePanel. When the screen is exercised via
a
Web Test, the Web Test shows that the AJAX scripts are downloaded for
every
partial post back.

My impression was that IE would cache these scripts so that the AJAX
script
download would only occur once.

What am I missing?





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