什么可能会导致＆QUOT;服务不可用503 QUOT;错误？ [英] What possibilities can cause "Service Unavailable 503" error?
问题描述
我们已经部署到服务器的asp.net MVC应用程序，并且但是当有太多的请求到服务器，客户端将只得到一个503 Service Unavailable错误。结果
但是，如果我将应用程序部署到另一台服务器（较低的硬件配置），一切运行良好，更要求它能够处理好。结果
我的问题是什么可能的配置可能会导致previous服务器只是抛出一个503错误？ （这意味着该请求没有达到我们的应用程序）。
we have a asp.net MVC application deployed to a server, and but when there is too many request to the server, the client will just get a "503 service unavailable" error.
But if I deployed the application to another server ( lower hardware configuration ), everything worked fine, even more requests it can handle well.
My question is what possible configuration can cause the previous server to just throw out a 503 error ? (which means the requests didn't reach our application).
推荐答案
您的网页是通过一个应用程序池服务。如果禁用/停止应用程序池，任何人试图浏览该应用程序，你会得到一个服务不可用。它可能发生，由于多种原因...
Your web pages are served by an application pool. If you disable/stop the application pool, and anyone tries to browse the application, you will get a Service Unavailable. It can happen due to multiple reasons...
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您的应用程序可能坠毁[检查事件查看器，看看你可以在你的应用程序/系统日志中找到事件日志]
Your application may have crashed [check the event viewer and see if you can find event logs in your Application/System log]
您的应用程序可能会频繁地崩溃。如果在5分钟内的应用程序池崩溃的5倍[检查应用程序池的设置进行快速失败]，您的应用程序池被禁用IIS，你会最终得到此消息。
Your application may be crashing very frequently. If an app pool crashes for 5 times in 5 minutes [check your application pool settings for rapid fail], your application pool is disabled by IIS and you will end up getting this message.
在两种情况下，问题是您的工作进程失败，你应该从碰撞的角度排除故障。
In either case, the issue is that your worker process is failing and you should troubleshoot it from crash perspective.
<一个href=\"http://blogs.msdn.com/b/rahulso/archive/2006/03/02/what-is-a-crash-technically-in-asp-net-and-what-to-do-if-it-happens.aspx\">What是崩溃（技术上）...在ASP.NET中，如果它发生在做什么呢？
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