How to set CacheControl S-MaxAge value in ASP.NET application?

Question

I am trying to set the cachability of an ASP.NET resource. Therefore, if I goto / foo / show, it will show View for some resource and close it for several hours (for example). To do this, I use the OutputCache attribute, which decorates my action method. Details of this cache (against this action method) are in the web.config file.

When I set this output cache, it sets the maxage value .. correctly, but the s-maxage value is 0. WTF?

here is the code ...

 [Authorize] [OutputCache(CacheProfile = "SomeController_Show")] public ActionResult Show(){ ... } 

and here is a fragment of the configuration file.

 <add name="SomeController_Show" duration="3600" varyByParam="authkey;format;blah" /> 

and a fragment of the answer ...

 Cache-Control:public, max-age=3576, **s-maxage=0** Content-Length:746 Content-Type:application/json; charset=utf-8 Date:Tue, 10 Aug 2010 00:42:17 GMT Expires:Tue, 10 Aug 2010 01:41:53 GMT Last-Modified:Tue, 10 Aug 2010 00:41:53 GMT Server:Microsoft-IIS/7.0 Vary:* 

Notice how maxage is installed correctly, but s-maxage is NOT? can someone help me here?

Answer 1

I found the answer, [AuthorizeAttribute] clears any value to zero. This means that no proxy servers cache the viewing result that has authorization.

I guess the contents of the proxy cache via url .. so if the URL does not contain authentication information (which really shouldn't ... :)), then how does it know which two different requests are for the same person or not?

(I added this answer instead of deleting to help other developers with this problem).

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