问题

使用BackgroundService或者IHostedService做后台定时任务的时候部署到iis会出现不定时定时任务取消的问题，原因是iis会定时的关闭网站

解决

应用程序池修改为AlwaysRunning


修改web.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath="dotnet" arguments=".\xxxx.dll" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout">
			<handlerSettings>
			  <handlerSetting name="experimentalEnableShadowCopy" value="true" />
			  <handlerSetting name="shadowCopyDirectory" value="./ShadowCopyDirectory/" />
	        </handlerSettings>
	  </aspNetCore>
    </system.webServer>
  </location>
  <!--新增代码在这-->
    <system.webServer>
        <applicationInitialization doAppInitAfterRestart="true">
            <add initializationPage="/notify/start" hostName="http://127.0.0.1:5000" />
        </applicationInitialization>
    </system.webServer>
</configuration>

参考

https://blog.csdn.net/maaici/article/details/108620830