Jason Tang

public async Task<ActionResult> Index()
{
    var model = new HomePageViewModel();

    model.AddMessage("Starting action");

    // kicking off both async 
    var headlineTask = GetHeadlineAsync(model);
    var temperatureTask = GetCurrentTemperatureAsync(model);

    // suspended untill all of these tasks are completed
    await Task.WhenAll(headlineTask, temperatureTask);

    model.AddMessage("Finished action");

    return View(model);
}

async Task GetHeadlineAsync(HomePageViewModel model)
{
    // get headline code here...
}

async Task GetCurrentTemperatureAsync(HomePageViewModel model)
{
    // get current temparature code here...
}

// set time out to 1.2s
[AsyncTimeout(1200)]
// if exceeded 1.2s render 'Timeout' page
[HandleError(ExceptionType=typeof(TimeoutException), View="Timeout")]
// Go to webConfig and change the error to 'on'
public async Task<ActionResult> Index(CancellationToken ctk)
{
    // code here...
}