Options Pattern in ASP.NET Core (edit)

Options pattern in ASP.NET Core

https://docs.microsoft.com/en-us/aspnet/core/fundamentals/configuration/options?view=aspnetcore-2.1

ASP.NET Using Options Sample

https://github.com/aspnet/Docs/tree/master/aspnetcore/fundamentals/configuration/options/sample

How to use the IOptions pattern for configuration in ASP.NET Core RC2

https://andrewlock.net/how-to-use-the-ioptions-pattern-for-configuration-in-asp-net-core-rc2/