如何找出为什么JavaScript是下载这么慢？ [英] How to find out why Javascript is downloading so slowly?

问题描述

我有一个ASP.NET MVC项目，该项目运行糖蜜缓慢。我在一个特定的电话打通小提琴手，发现几个电话，其中有改进的空间很大，至少可以说：

I have an ASP.NET MVC project, which is running as slow as molasses. I opened up Fiddler on one particular call, and found several calls where there's a lot of room for improvement, to say the least:

蓝线我的理解是我的控制器通话，我明白的地方去优化的东西。但是，我看到一堆绿线（我假设，这就意味着JavaScript），而那些也采取了heckuva长的时间。我必须假设jQuery和剑道脚本不正常需要4-6秒转一圈，所以必须有东西在我们的项目code是造成缓慢。但是，$如何跟踪按住C $ C需要优化？

The blue lines I understand are calls to my controller, and I understand where to go to optimize that stuff. But I see a bunch of green lines (which I assume means javascript), and those are also taking a heckuva long time. I must assume that jQuery and Kendo scripts don't normally take 4-6 seconds to turn around, so there must be something in our project code that's causing the slowness. But how do I track down what code needs optimization?

编辑：下面@DaggNabbit在评论中指出，是缓慢的，因为这些的Javascript被调用缓存无效化参数，所以他们正在与每一个电话重新下载！但我看不到任何地方在我的code其中我们要明确地添加缓存无效。例如：

@DaggNabbit in comments below points out that the slowness is because these Javascripts are being called with a cachebuster parameter, so they're being downloaded anew with every call! But I can't see anywhere in my code where we're explicitly adding a cachebuster. e.g.:

<script src="@Url.Content("~/Scripts/kendo.web.min.js")"></script>
...
@Scripts.Render("~/bundles/jquery", "~/bundles/jquerymobile")

我真的不是一个UI专家，但我不能看到那里的缓存无效的来源。任何其他的想法？

I'm really not a UI expert, but I can't see where the cachebuster is coming from. Any other ideas?

推荐答案

这@DaggNabbit正确识别的问题是，JavaScript的正在使用缓存无效参数调用。我已邀请他到自己发布答案的正确答案;当他这样做我会给他回答的功劳。

The problem that @DaggNabbit correctly identified is that the javascripts were being called using a cachebuster parameter. I've invited him to post his answer as the correct answer; when he does so I'll give him answer credit.

同时，如果你有兴趣的为什么的正在插入缓存无效，请参见这里。

Meanwhile, if you're interested in why the cachebuster was being inserted, see here.

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