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What’s the singleton pattern? A singleton pattern is an object creation pattern where only one instance of the object can ever be created in the lifetime of the application. In C#, this would be akin to having a static class as that would ensure there is only one instnace of the class for the application’s lifetime. public sealed class MessageService { public static MessageService SingletonMessageService { get; } = new MessageService(); // Auto implemented properties allow us to declare the singleton service in this manner private MessageService() { } } With the above example, there would always be only one instance of MessageService and the only way to use it is by calling it through MessageService....

I’ve been reading up on patterns recently and came across the facade pattern once again. I remember reading up on this a couple of years ago but never really understood it till now. I thought that the facade patterns was unnecessary as it will create unnecessary classes and complicate the solution. However, after playing around with it and having a better understanding of software development, I can now understand why a facade pattern can be quite useful....