Master Software Design Patterns: Complete Course Outline (.NET & Java)

 

 

🏗️ Software Design Patterns Course Outline (.NET & Java, Beginner to Advanced, Latest Features)

📌 Introduction

Software Design Patterns provide proven solutions to recurring problems in software development. Mastering design patterns helps developers build robust, maintainable, and scalable applications across platforms. This course covers creational, structural, behavioral, and modern design patterns in .NET and Java, including latest language features, functional patterns, and real-world applications for 2025.

📘 Detailed Course Outline

Module 1: Introduction to Design Patterns

• What are design patterns and their importance

• History and evolution (Gang of Four, GoF)

• Categories of design patterns: Creational, Structural, Behavioral

• Benefits: reusability, scalability, maintainability

• Principles behind patterns: SOLID, DRY, KISS, YAGNI

Module 2: Core Principles of Object-Oriented Design

• Abstraction, encapsulation, inheritance, polymorphism

• Interfaces and abstract classes

• Coupling and cohesion

• Dependency inversion and inversion of control (IoC)

• Composition over inheritance

• Introduction to modern OOP features in .NET 7+ and Java 21+

Module 3: Creational Design Patterns

• Singleton (classic and modern thread-safe implementations)

• Factory Method

• Abstract Factory

• Builder Pattern

• Prototype Pattern

• Lazy Initialization and Dependency Injection patterns

Module 4: Structural Design Patterns

• Adapter / Wrapper Pattern

• Bridge Pattern

• Composite Pattern

• Decorator Pattern

• Facade Pattern

• Flyweight Pattern

• Proxy Pattern (Static, Dynamic, and Virtual Proxy)

Module 5: Behavioral Design Patterns

• Strategy Pattern

• Observer / Publisher-Subscriber Pattern

• Command Pattern

• Iterator Pattern

• Mediator Pattern

• Memento Pattern

• State Pattern

• Template Method Pattern

• Visitor Pattern

• Chain of Responsibility Pattern

Module 6: Concurrency & Multithreading Patterns

• Thread-Safe Singleton

• Producer-Consumer Pattern

• Reactor Pattern

• Scheduler / Task Queue patterns

• Futures and Promises usage patterns (.NET Task, Java CompletableFuture)

Module 7: Functional & Reactive Patterns

• Functional interfaces and lambda patterns

• Event-driven architecture patterns

• Reactive Streams (RxJava, Rx.NET)

• Observer and Publisher-Subscriber in reactive programming

• Modern patterns using Java 21 Flow API and .NET System.Reactive

Module 8: Architectural & Enterprise Patterns

• MVC, MVP, MVVM patterns

• Layered / N-tier architecture patterns

• Microservices design patterns (API Gateway, CQRS, Event Sourcing)

• Repository and Unit of Work patterns

• Dependency Injection and IoC containers (.NET Core DI, Spring)

• Service Locator pattern

Module 9: Best Practices & Anti-Patterns

• Common anti-patterns to avoid

• Choosing the right pattern for the right scenario

• Refactoring legacy code using patterns

• Combining patterns for real-world solutions

• Versioning and maintaining design patterns in modern apps

Module 10: Advanced & Modern Design Patterns

• Modern .NET and Java features in patterns (records, sealed classes, pattern matching)

• Async / Await and reactive design patterns

• Cloud-native patterns (circuit breaker, bulkhead, retry)

• Event-driven and streaming design patterns

• Integration with CI/CD pipelines and DevOps considerations

📌 Conclusion

Mastering Software Design Patterns empowers developers to build scalable, maintainable, and high-performance applications in both .NET and Java. This roadmap covers classic, advanced, and modern patterns, emphasizing real-world applications, concurrency, reactive programming, and cloud-native best practices for 2025-ready software solutions.

 

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