When will the IIS restart the website?

Question

I got some information form restart website in IIS when changing values in the appSettings of the web.config so now I know IIS will restart the application poll not website.

As I know when I update the web.config the IIS would restart the application pool but sometimes I didn't update the web.config but after my deploy the website seems like be restarted. Why? because I update the website.dll or some other reason and how does IIS works to know the dll was updated and it should use the new dll to serve the user?

Answer 1

Create/Update/Delete files under below folders will cause IIS recycle the app pool:

Bin

App_GlobalResources

Global.asax

App_Code

App_WebReferences

Web.config

Some resources:

https://blogs.msdn.microsoft.com/tmarq/2007/11/01/asp-net-file-change-notifications-exactly-which-files-and-directories-are-monitored/

https://webmasters.stackexchange.com/questions/77322/update-net-website-without-reloading

https://shazwazza.com/post/all-about-aspnet-file-change-notification-fcn/

ASP.net C# requires IIS restart when new DLL copied to BIN directory