Even when you think you understand multithreading well enough, there's some games you'll find interesting.
The Deadlock Empire are games in C# and Delphi coding that will show how much you know and have learnt about where dragons are in your code.
Check them out, and see how much you know!
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes