- Facade Pattern
Introduction The Facade Pattern is a structural design pattern that provides a simplified, unified interface to a complex subsystem. Think of ordering food at a restaurant — you simply tell the waiter what you want. Behind the scenes, the kitchen, inventory, and billing systems coordinate to…
- Factory Method Pattern
Introduction The Factory Method pattern defines an interface for creating objects but lets subclasses decide which class to instantiate. Instead of calling a constructor directly, client code delegates creation to a factory method, which returns an object that conforms to a common interface. This…
- Builder Pattern
Introduction The Builder pattern separates the construction of a complex object from its representation, allowing the same construction process to create different representations. It shines when an object requires many configuration options, optional parameters, or a specific construction sequence…
- Standard Design Principles
These are the foundational design principles every developer should internalize. They complement the SOLID Principles (covered in a dedicated post) and apply across languages and frameworks. 1. DRY (Don’t Repeat Yourself) Every piece of knowledge should have a single, authoritative representation…
- Singleton Pattern
Introduction The Singleton pattern ensures a class has only one instance and provides a global point of access to it. It is one of the most widely used — and misused — design patterns in software engineering. When applied correctly, it solves real problems around shared resource management, such as…