What is the purpose of app.config file in ASP.NET Core web application (.NET Framework)?

Question

In ASP.NET Core web application (.NET Framework) there is app.config file which contains:

<configuration>
   <runtime>
      <gcServer enabled="true"/>
   </runtime>
</configuration>

but this file is not available in ASP.NET Core web application (.NET Core) project. running GC in server mode is necessary for ASP.NET Core web application (.NET Framework) ?

Answer 1

There is an equivalent in the web app, you're looking for project.json and it's runtimeOptions. I detailed this a little in my migration guide, (look for runtimeOptions).

The addition of the gsServer is to tell the runtime to perform garbage collection. The server in the context of the ASP.NET Core application is Kestrel. There are various details about this in the project.json schema changes here. The documentation states this:

Enable server GC

Additionally, you should look at the following:

• Host Configuration Knobs
• Rutime Configuration