Уже не новый, но тем не менее, невероятно крутой доклад о реализации веб-сервер Kestrel!
https://devdigest.today/post/277
https://devdigest.today/post/277
Developers Digest
ASP.NET Core Kestrel: Adventures in building a fast web server - Damian Edwards & David Fowler
How does ASP.NET Core manage to be more than 20x faster than ASP.NET? A large part of it is thanks to the brand new cross-platform .NET web server