如何检查是否向缓存发出请求？

Question

I use a MVC application that use "outputcache" attribute:

namespace CachingInMVC.Controllers
{
    public class HomeController : Controller
    {
        [OutputCache(Duration = 10, VaryByParam ="none", Location = 
        OutputCacheLocation.Server)]
        public ActionResult Index()
        {
            return Content(DateTime.Now.ToString("T"));
        }

        public ActionResult About()
        {
            ViewBag.Message = "Your application description page.";

            return View();
        }

        public ActionResult Contact()
        {
            ViewBag.Message = "Your contact page.";

            return View();
        }
    }
}

How can i know/check if "index" works on cache or on server?

Answer 1

You can check that in two ways:

• Set a breakpoint in the action. And if you refresh the browser and it does not hit the breakpoint then it is being served from cache
• Or open the web developer tool on firefox. Under the Network section check the value in the Transferred column. If it says cached then it was picked from the cache