We hope that you enjoyed this book and learned how to make your web applications high-performing and easy to maintain, particularly when you use C#, ASP.NET Core and .NET Core. We tried to keep as much advice as possible applicable to general web app development, while gently introducing you to the latest open source frameworks from Microsoft and others.
Clearly a topic such as this changes quite rapidly, so keep your eyes open online for updates. There is an announcements repository on GitHub that is worth watching at github.com/aspnet/announcements . Hopefully, a lot of the lessons in this book are generally good ideas and they will still be sensible for a long time to come.
Always keep in mind that optimizing for its own sake is pointless, ...