Windows Server 2008 IIS7 503 error solution

Windows 2008 R2 often comes with 503 wrong solutions when accessing 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 due Previously, the default configuration was used. The server can only process up to 5000 simultaneous requests. The above-mentioned error occurred because of a situation that caused more than 5000 requests at the same time this afternoon. In order to avoid such errors, we adjusted the settings according to the relevant documentation, allowing the server to support 100,000 simultaneous requests from the settings. The specific settings are as follows: 1. Adjust the IIS 7 application pool queue length from the original default 1000 to 65535. IIS Manager > ApplicationPools > Advanced Settings Queue Length : 65535 2. Adjust the appConcurrentRequestLimit setting of IIS 7 from the original default 5000 to 100000. c:\\windows\\system32\\inetsrv\\appcmd.exe set config /section:serverRuntime /appConcurrentRequestLimit:100000 You can see this setting in %systemroot%\\System32\\inetsrv\\config\\applicationHost.config: 3. Adjust machine.config The processModel>requestQueueLimit setting was changed from the original default 5000 to 100000. Copy the code reference article: 4. Modify the registry, adjust the number of TCPIP connections supported by IIS 7 from the original default 5000 It is 100000. Reg add HKLM\\System\\CurrentControlSet\\Services\\HTTP\\Parameters /v MaxConnections /t REG_DWORD /d 100000 After completing the above 4 settings, you can support 100,000 simultaneous requests. The above settings are enabled by the West West Software Server.
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