First sample, simpliest one. Adding assembly redirects as they are needed with MVC 4.0.

Author: moonpyk

DevTrends.MvcDonutCaching.Demo/Controllers/HomeController.cs

@@ -10,9 +10,10 @@ public class HomeController : Controller
     {
         //
         // GET: /Home/
+        [DonutOutputCache(Duration = 24 * 3600)]
         public ActionResult Index()
         {
-            return View();
+            return View(DateTime.Now);
         }
     }
 }

DevTrends.MvcDonutCaching.Demo/Views/Home/Index.cshtml

@@ -1,5 +1,10 @@
-@{
-    ViewBag.Title = "title";
+@model DateTime
+@{
+    ViewBag.Title = "Welcome to MvcDonutCaching demo";
 }
 
 <h2>@ViewBag.Title</h2>
+
+<p>
+    This page has been rendered at @Model
+</p>

DevTrends.MvcDonutCaching.Demo/Web.config

@@ -56,6 +56,23 @@
 
   <runtime>
     <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <!-- 
+      System.Web Assembly redirects are needed by MvcDonutCaching with MVC 4 (The library is linked against System.Web.Mvc 3.0) 
+      Without that, DonutCacheAttribute will be ignored.
+      -->
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-4.0.0.0" newVersion="4.0.0.0" />
+      </dependentAssembly>
+      <dependentAssembly>
+        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
+        <bindingRedirect oldVersion="1.0.0.0-2.0.0.0" newVersion="2.0.0.0" />
+      </dependentAssembly>
+      <!-- Added by Autofac -->
       <dependentAssembly>
         <assemblyIdentity name="Autofac" publicKeyToken="17863af14b0044da" culture="neutral" />
         <bindingRedirect oldVersion="0.0.0.0-3.0.0.0" newVersion="3.0.0.0" />