CODEWITHSUNDEEP
asp.netasp.net-mvcasp.net-mvc-3iisiis-7.5
troebr
troebr

Reputation: 31

How to disable server-side caching on IIS 7.5 (asp net mvc3)

I'm struggling with my IIS setup regarding caching, here's a brief description of my problem:

I'm making a site for mobile and non-mobile, sharing the same controllers. IE: mysite/page will serve either mysite/page.cshtml, or mysite/M/page.cshtml, depending on the device.

Here's the catch, it worked fine with my local and integration environment (cassiini and iis 6), but on another machine (2008r2/iis 7.5), apparently there is an aggressive server-side caching policy:

On the contrary, if I were to restart the server and access the site using my phone first, then I will get the mobile version on my desktop (only for the pages I already visited of course).

I tried 2 solutions so far:

Disabling OutputCache from my Web.config:

<httpModules>
  [..]
  <remove name="OutputCache" />
</httpModules>

And unchecking "Enable output cache" in "Output Caching" for my site in IIS.

What's bugging me is that I do not have this problem with my other server (iis 6.0), although caching is enabled on this one, which leads me to think it is related to iis 7 caching addition.

My question is simple: how does one disable server-side caching on IIS 7.5?

Thanks in advance for your iis lights!

Found it!

Sorry guys you could not really guess that one, I extend RazorViewEngine (actually I used a sample mobile mvc3 template app), and this class overrides FindView, it is supposed to take into account a useCache parameter, but apparently no matter how I configure IIS, it was set to true with iis7. I set it to false everywhere. I'll look into appropriate tuning of that parameter tomorrow.

public override ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache)

Thanks for your help guys, I have a good understanding of all the caching possibilities with IIS now ;). It's interesting that this behaves differently with IIS 7.0 (IIS6 and Cassiini were consistent).

Edit:

More info: http://aspnet.codeplex.com/workitem/8201?PendingVoteId=8201 , it is related to debug/release working of FindView.

This was my exact problem: http://aspnet.codeplex.com/workitem/8201?PendingVoteId=8201

Upvotes: 3

Views: 11167

Answers (3)

Etch
Etch

Reputation: 3054

If you are speaking to static types such as images and such you can add this to your web.config

 <staticContent>
  <clientCache cacheControlMode="DisableCache"/>
</staticContent>

Update:

Here is a link

This link talks in detail about what you want to do.

Upvotes: 1

Adam Tuliper
Adam Tuliper

Reputation: 30142

As Rick said, you need to profile this first. A quick test though would be to implement a no-cache controller as I outlined here: Disable browser cache for entire ASP.NET website

Upvotes: 1

rick schott
rick schott

Reputation: 20617

I think you are dealing with browser cache. Have you profiled the traffic to see the 304s? You may be chasing the wrong problem.

NOTE: Your cache busting solution has to include the client side as well as the server-side.

Upvotes: 0

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