Singleton Pattern (Gang of Four Design Patterns Series)
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- Опубликовано: 30 июн 2024
- #designpatterns #dotnet #gangoffour
The Singleton Pattern is one of the Creational Patterns catalogued in the famous Gang of Four Design Patterns: Elements of Reusable Object-Oriented Software book by Erich Gamma, Richard Helm, Ralph Johnson, and John Vlissides.
The Singleton Pattern has the unique distinction among design patterns of potentially being an anti-pattern. Due to the fact that a Singleton may provide global mutable state, control its own creation, access, and business logic, and be accessed statically to provide global access across all contexts, it can lead to tightly-coupled code that binds software to specific implementations and I/O. It is for such reasons that it is often difficult to write unit tests for clients of a Singleton.
In this series, we’ll be going through each of the patterns covered in the “Gang of Four” Design Patterns - Elements of Reusable Object-Oriented Software. Each video will use a real-world example, taking inspiration from food-based businesses. I’m including typical integrations in the form of mock databases, AMQP queues, email services, and loggers, as well as several features from C# 9.0. All of the code for this series is open source and available at the GitHub link below.
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▬▬▬▬▬▬ 🕘 T I M E S T A M P S 🕘 ▬▬▬▬▬▬
0:00 - Introduction to the Builder Pattern
1:23 - Motivation / Definition
7:15 - Real-World Code
▬▬▬▬▬▬ 📚 TOPICS OVERVIEW 📚 ▬▬▬▬▬▬
☁️ Design Patterns ☁️
► Singleton Pattern
► Singleton Anti Pattern
► Object Oriented Design
► Gang of Four
► Making Code Easy to Change
► OOP
► C#
► .NET 5.0
▬▬▬▬▬▬ 🔗 LINKS ▬▬▬▬▬▬
► GitHub repo for this project:
github.com/wesdoyle/design-pa... 
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The infamous singleton pattern. Is it a pattern or an anti-pattern? Check out link to repo in the description! What pattern you want to see next?
abstract factory
@@qwerty1150 Coming up next! Thanks for the suggestion.
Strategy design pattern
awesome video series, thanks
Another great video. I just had one doubt. How do we ensure that while disconnecting only that particular client is getting disconnected. There is no client ID sent while disconnecting.
Can you share which theme and font you are using in this video. And great explanation thank you for sharing those videos.
Why would it be a problem if it's used for like.. DI or logging? Does end up being an issue?