2025.06.10F·136Singleton Pattern: Only One Instance in the World
One President per country. One DB connection pool. Most famous yet controversial pattern for global managers. Convenient but path to testing hell.
CSDesignPatternSingleton
→2025.06.10F·135Observer Pattern: The Secret Behind YouTube Subscribe
Don't check every second if a new video is up. One subscribe button automatically notifies you. The elegant design pattern solving 1:N dependencies.
CSDesignPatternObserver
→2025.06.10F·134Decorator Pattern: Wrapping Additional Features
Add new features without modifying existing class. Like adding whipped cream, syrup, shot to coffee. Dynamically combine features. Principle behind Python @decorator.
CSDesignPatternDecorator
→2025.06.10F·133Factory Pattern: The Object Factory
Client says 'Pizza please', Factory handles the baking logic. Hiding creation complexity.
CSDesignPatternFactory
→2025.06.10F·132Design Patterns: Proven Solutions
Singleton, Factory, Observer... Don't reinvent the wheel. Use the proven blueprints.
CSArchitectureDesignPattern
→2025.06.10F·131Adapter Pattern: The Universal Travel Plug
Connecting incompatible interfaces. How to make old code work with new code without rewriting.
CSDesignPatternAdapter
→2025.06.09F·130SOLID Principles: 5 Commandments to Avoid Bad Code
SRP, OCP, LSP, ISP, DIP. The foundation of maintainable software architecture. Examples in TypeScript.
CSArchitectureOOP
→2025.06.06F·128MVP & MVVM: Making Views Smarter
MVC's Controller got too fat. Split into Presenter/ViewModel, auto-update with Data Binding. Core pattern of modern frontend.
CSDesignPatternArchitecture
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