Introduction The Proxy Design Pattern is a structural design pattern that provides a surrogate or placeholder for another object to control access to it. This pattern is useful when creating objects is resource-intensive, or when access to the real object needs to be controlled or restricted. Purpose The main goal of the Proxy Pattern…
What is the Facade Pattern? The Facade Pattern is a structural design pattern that provides a simplified interface to a complex subsystem. It hides the complexities of the system and provides a cleaner and easier-to-use API to the client. Intent Provide a unified, high-level interface to a set of interfaces in a subsystem. Make…
The Prototype Pattern is a creational design pattern that enables you to create object copies (clones) without depending on their concrete classes. Purpose Avoid the cost of creating a new object from scratch. Simplify object creation when it’s complex or time-consuming. Duplicate objects dynamically at runtime. Components Prototype InterfaceDeclares a clone() method. Concrete PrototypeImplements…
Introduction:Domain-Driven Design (DDD) emphasizes the importance of modeling software based on the domain it operates in, leading to more maintainable and scalable systems. However, adopting DDD can sometimes be challenging, especially when it comes to organizing project structure and naming conventions. In this tutorial, we'll explore best practices for structuring DDD projects and establishing…
In Java, decorators are a structural design pattern that allows behavior to be added to individual objects dynamically, without affecting the behavior of other objects from the same class. Decorators are particularly useful when you need to add functionality to objects in a flexible and reusable way. This tutorial will explain the decorator pattern…
Introduction: The Strategy Pattern is a behavioral design pattern that allows defining a family of algorithms, encapsulating each one, and making them interchangeable. In this tutorial, we'll explore the Strategy Pattern using a duck behavior example in Java. Understanding the Strategy Pattern The Strategy Pattern consists of three main components: Strategy: This is an…
Introduction : The Observer Pattern is a behavioral design pattern where an object, known as the subject, maintains a list of dependents, known as observers, that are notified of any state changes. This pattern is widely used to implement distributed event handling systems. Let's walk through a simple example of the Observer Pattern in…
1. Overview: The Factory Pattern is a creational design pattern that provides an interface for creating instances of a class but allows subclasses to alter the type of objects that will be created. This pattern promotes loose coupling between classes, making it easier to extend and maintain the code. 2. Example Scenario: Imagine a…
Introduction Hexagonal Architecture, also known as Ports and Adapters architecture or simply the Onion Architecture, is a design pattern that aims to create a loosely coupled and easily maintainable software system. The core idea is to separate the business logic from external concerns, such as databases, user interfaces, and external services. In this tutorial,…
Inversion of Control (IoC) is a design principle where the control flow of a program is inverted: instead of the application controlling the flow of execution, it delegates control to an external framework or container. This helps in achieving loose coupling and better modularization of code. In this tutorial, we'll explore the concept of…