I have an ASP .NET MVC 4 application. I'd like to return cache-control response header with no-store set by default for all actions and allow some exceptions for ceratin endpoints if they were to cache results. To achieve this I've tried to register OutputCacheAttribute at Application_Start() for all actions with NoStore property set to true. Then I could overwrtie global settings by decorating controllers or actions with OutputCacheAttribute if I wanted them to cache results. Below is the simplified code sample from my app. I've based everything on this post https://forums.asp.net/t/2146531.aspx?Disable+cache+in+ASPNET+MVC.
public class MvcApplication : System.Web.HttpApplication
{
protected MvcApplication() : base()
{
}
protected void Application_Start()
{
GlobalFilters.Filters.Add(new OutputCacheAttribute
{
VaryByParam = "*",
Duration = 0,
NoStore = true,
});
}
}
However when I enter views that consist of partial views the application throws the following exception:
Why should I set the duration if I don't even want to cache results? Also it looks like child actions don't support passing NoStore property: Asp.Net MVC 3 Partial Page Output Caching Not Honoring Config Settings
I've also tried to make my own action filter and it seems to work but I don't like this approach very much, and I don't event know if it would be possible to override my custom attribute on controller or action levels:
public class NoCacheGlobalAttribute : ActionFilterAttribute
{
public override void OnResultExecuted(ResultExecutedContext filterContext)
{
var cache = filterContext.HttpContext.Response.Cache;
cache.SetNoStore();
cache.SetMaxAge(TimeSpan.FromSeconds(0));
}
}
Is there any way I could make use of existing OutputCacheAttribute in the way I described above? I want to disable caching for all actions by default and be able to enable caching for certain endpoints if I want to. If not, have you got any other tips?
