如何并行渲染 MVC 操作以减少页面的整体渲染时间？
我有一个页面，上面有很多小部件。每个小部件都是一个视图。现在，小部件渲染是在 foreach 循环中完成的，如下所示。
public class WidgetCollection : List<Widget>, IPersonalizable
{
public void Render(HtmlHelper html)
{
foreach (Widget w in this)
{
html.RenderAction("Default", "Widget", new { model = w });
}
}
但这意味着我的一些小部件由于 IO 限制而需要 800 毫秒渲染，因此会阻塞其他仅需要 100 毫秒渲染的小部件。因此渲染页面总共花费的时间约为 3 秒。我希望页面在 800 毫秒多一点或尽可能接近的时间内渲染。
我的一个想法是调用 html.Action() 来并行获取每个操作的字符串值，但 MVC 似乎不喜欢并行渲染视图。当我尝试执行此操作时，我总是收到“对象未设置为对象实例”错误。该错误来自 MVC 堆栈深处，因此我认为这只是一个 MVC 错误。
有谁有更好的想法来提高页面渲染速度？
I have a page that has a bunch of widgets on it. Each widget is a view. Right now the widget rendering is done in a foreach loop like so.
public class WidgetCollection : List<Widget>, IPersonalizable
{
public void Render(HtmlHelper html)
{
foreach (Widget w in this)
{
html.RenderAction("Default", "Widget", new { model = w });
}
}
But that means that some of my widgets that render in 800ms because they're IO bound are blocking a bunch of other widgets than only take 100ms to render. So in total the time it takes to render the page is about 3 seconds. I want the page to render in just a bit over 800ms or as close as possible to that.
One idea I had was to call html.Action() to get a string value for each action in parallel but MVC doesn't seem to like rendering views in parallel. I always get an "Object not set to the instance of an object" error when I attempt to do it. The error comes from deep in the MVC stack so I think it is just an MVC bug.
Does anyone have a better idea for increasing page rendering speed?
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你可以使用区域并通过ajax“填充”它们吗？
Can you use areas and "fill" them via ajax?
Paul，
您的基本控制器可以继承一个
AsyncController类。这可能是你最好的选择。即
此链接可能会进一步说明： http://msdn.microsoft.com/ en-us/library/ee728598.aspx
或这个：http://bartwullems.blogspot.com/2010/01/using-asynccontroller-in-aspnet-mvc-2.html
然后您可以将其与ajax一起使用或直接使用，鉴于它是异步的。
吉姆
Paul,
There is a
AsyncControllerclass that your base controllers can inherit from. that may be your best bet.i.e.
this link may shed further light: http://msdn.microsoft.com/en-us/library/ee728598.aspx
or this one: http://bartwullems.blogspot.com/2010/01/using-asynccontroller-in-aspnet-mvc-2.html
You'd then use it either with ajax or directly, given that it's async.
jim