Cache aspx page returning an asset on client?

Question

How do you cache an aspx page call on the client?

The aspx page returns an asset and looks like this:

We have tried with Output Cache, with caching in the code behind, but the only result we get is server side caching (by IIS7).

In the header of the response cache-control is set to public and expiration time is set (to 14800 as set in output cache profile).

I have a similar problem - aspx pages that return dynamically generated images. The server caches and doesn't re-execute the page, but it returns the content again (the full file rather than a 304 status) and the browser doesn't seem to cache it at all. — Keith, Jun 08 '10 at 09:18

score 0 · Answer 1 · edited Aug 11 '22 at 08:24

0

I think I've found why this happens it's a bug in IE.

IE can't cache if the Vary:* HTTP response header is used, but IIS returns it by default because it's in the HTTP 1.1 spec.

Try adding the following to your web.config:

<system.web> 
    <caching>
        <outputCache omitVaryStar="true" />
    </caching>
</system.web>

edited Aug 11 '22 at 08:24

Glorfindel

answered Jun 08 '10 at 11:35

Keith

1 Answers1