原文网址：https://www.youyong.top/article/1158fd6ee1344
Windows系统服务器基于IIS搭建的网站 访问量大时很容易导致报错： Error Summary: HTTP Error 503.2 - Service Unavailable 。The serverRuntime@appConcurrentRequestLimit setting is being exceeded. Detailed Error Information: Module IIS Web Core Notification BeginRequest Handler StaticFile Error Code 0x00000000
