ASP.NET MVC如何花费10秒钟以上的时间（第一次）加载空白Controller？

Question

I'm managing an ASP.NET MVC application which use (basically) .NET MVC and Entity Framework . I notice that every time I Publish the website, it takes very long time (around 10-15 seconds) every time I load (for the first time) each Controller/Action .

I thought it was some Entity problem, so I've created a blank TestController/Index and place a simple View code:

// Controller
public class TestController : Controller
{
    public ActionResult Index()
    {
        return View();
    }
}

// View Index.cshtml
test page controller Page generated in @((DateTime.UtcNow - HttpContext.Current.Timestamp.ToUniversalTime()).TotalSeconds.ToString("F4")) seconds   

Than I publish the website using Visual Studio ( FTP mode).

Once published, I call from browser a separate/generic/public page ( Home/Index for example), trying to "load/build" the app for the first time; it will indeed require a bit of time, due to build and such, but that's fine).

Now: when I try to load that empty TestController , it still takes lots of time:

How can this be possible? Does it compile each single controller separately? So every time I load a new controller (after publish the website or retart the pool) it will take that amount of time? I guess I'm wrong...

The second time I load it (and the following) is very faster:

How can I fix this? Where could it be the problem?

Note apart - this is my Global.asax , which shouldn't engrave:

public class MvcApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }

    protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
    {
        HttpCookie authCookie = Request.Cookies["CookieFA"];
        if (authCookie != null)
        {
            FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);

            CustomPrincipal principal = new CustomPrincipal(authTicket.Name);
            CustomPrincipalSerializeModel userSerializeModel = JsonConvert.DeserializeObject<CustomPrincipalSerializeModel>(authTicket.UserData);
            principal.UserID = userSerializeModel.ID;
            principal.FirstName = userSerializeModel.FirstName;
            principal.LastName = userSerializeModel.LastName;
            principal.Roles = userSerializeModel.RoleName.ToArray<string>();

            HttpContext.Current.User = principal;
        }
    }
}

Answer 1

This happen because .NET build the view related with your action in the first request, it's the cause for the first request is slowly and the next ones faster. To improve it, you can build the views together with the application, exists some extensions that can do it for you as:

https://www.nuget.org/packages/RazorGenerator.Mvc/ https://www.nuget.org/packages/RazorGenerator.MsBuild/

You can read more in the RazorGenerator GitHub page about how to use these extension.