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I have an ASP.NET core web application which hosts a background task via the IHosedService interface. I wrote about it in this post, if you want more info. The task needs to run continuously to poll for messages on an azure queue storage every 5 seconds. I have learned the default settings on IIS do not start the application until it receives the first request. Additionally, if the application has not received a request after a predefined period of time, IIS kills the application.
I could have hosted the application as a Windows service or converted the application into a console application and use the Windows scheduler to have it run continuously. However, I find hosting on a real IIS server convenient and beneficial since we already have other applications running on IIS and we can access the application via HTTP.
In this post, I share how I make the application to auto start and always run on IIS.
If you have an ASP.NET or an ASP.NET core which hosts a background job that needs to always run, want to preload the application for performance instead of waiting for the initial request to hit the app, or just get some tips on IIS, then read on.