Hands-On Design Patterns with C# and .NET Core

Processes and threads

To understand the singleton pattern, we need to provide a little context. In the .Net Framework, an application will be composed of lightweight, managed subprocesses called application domains that can comprise one or more managed threads. For the purpose of understanding the singleton pattern, let's define this as a multithreaded application that contains one or more threads running simultaneously. Technically, the threads are actually not running simultaneously, but this is achieved by dividing the available processor time between the threads, so that each thread will execute for a small amount of time and then the thread will suspend activity, allowing for another thread to execute.

Going back to the singleton pattern, ...