ASP.NET MVC: Clear an action's cache from another action

Question

Is it possible to clear one action's cache from another action?

Let's say my Index action lists all my Widgets. There are lots of Widgets but new ones are not created very often. So I want to cache my Index action indefinitely but force it to render after a successful Create.

public class WidgetController : Controller
{
    [OutputCache(Duration = int.MaxValue, VaryByParam = "none")]
    public ActionResult Index()
    {
        return View(Widget.AllWidgets);
    }

    public ActionResult Create()
    {
        return View();
    }

    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Create(string name)
    {
        Widget widget = new Widget(name);

        // Can I clear Index's cache at this point?
        // ClearCache("Index");

        return View(widget);
    }
}

possible duplicate of How to "invalidate" portions of ASP.NET MVC output cache? — bzlm
– bzlm, Commented Oct 25, 2010 at 18:21

takepara · Accepted Answer · 2009-11-01 07:42:34Z

4

HttpResponse.RemoveOutputCacheItem?

answered Nov 1, 2009 at 7:42

takepara

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1 Comment

Lobstrosity Over a year ago

Thanks, led me to the following question, which answered a bit more thoroughly: stackoverflow.com/questions/1288463/…

Chris Shaffer · Accepted Answer · 2009-10-28 15:06:17Z

2

Use a VaryByCustom property to expire the cache whenever a new Widget is added.

answered Oct 28, 2009 at 15:06

Chris Shaffer

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Comments

Darin Dimitrov · Accepted Answer · 2009-10-28 15:04:46Z

0

IMHO if you call the Create action you won't hit the cache because you are just rendering a view and not redirecting to the Index action whose output has been cached.

answered Oct 28, 2009 at 15:04

Darin Dimitrov

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1 Comment

Lobstrosity Over a year ago

Right. I'm not concerned about caching Create. But when the POST Create action occurs, I want to programmatically clear Index's cache so that the next hit on Index will reflect the new Widget.

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