Design Patterns Mastery Roadmap
Master the essential design patterns that form the foundation of robust software architecture. Learn time-tested solutions to common programming problems used across all major programming languages.
Design Pattern Fundamentals
| Concept | Status |
|---|---|
| Core Principles | |
| What are Design Patterns? | |
| History & Gang of Four | |
| Pattern Categories Overview | |
| When to Use Patterns | |
| Anti-patterns & Overuse | |
| SOLID Principles | |
| Single Responsibility Principle (SRP) | |
| Open/Closed Principle (OCP) | |
| Liskov Substitution Principle (LSP) | |
| Interface Segregation Principle (ISP) | |
| Dependency Inversion Principle (DIP) | |
| Object-Oriented Design | |
| Composition vs Inheritance | |
| Encapsulation & Information Hiding | |
| Polymorphism & Dynamic Dispatch | |
| Abstraction & Interfaces | |
Creational Patterns
| Concept | Status |
|---|---|
| Core Creational Patterns | |
| Singleton Pattern | |
| Factory Method Pattern | |
| Abstract Factory Pattern | |
| Builder Pattern | |
| Prototype Pattern | |
| Singleton Variations | |
| Thread-Safe Singleton | |
| Lazy Initialization | |
| Double-Checked Locking | |
| Enum Singleton (Java) | |
| Singleton Alternatives | |
| Factory Patterns | |
| Simple Factory vs Factory Method | |
| Factory Method Implementation | |
| Abstract Factory Use Cases | |
| Factory with Dependency Injection | |
| Builder Pattern Variations | |
| Step Builder Pattern | |
| Fluent Interface Builder | |
| Director & ConcreteBuilder | |
| Builder with Validation | |
Structural Patterns
| Concept | Status |
|---|---|
| Core Structural Patterns | |
| Adapter Pattern | |
| Decorator Pattern | |
| Facade Pattern | |
| Composite Pattern | |
| Bridge Pattern | |
| Flyweight Pattern | |
| Proxy Pattern | |
| Adapter Variations | |
| Object Adapter vs Class Adapter | |
| Two-Way Adapter | |
| Pluggable Adapter | |
| Decorator Applications | |
| Java I/O Streams (Decorator) | |
| Component-based Decorators | |
| Decorator vs Inheritance | |
| Proxy Types | |
| Virtual Proxy (Lazy Loading) | |
| Protection Proxy (Access Control) | |
| Remote Proxy (RPC/Network) | |
| Caching Proxy | |
Behavioral Patterns
| Concept | Status |
|---|---|
| Core Behavioral Patterns | |
| Observer Pattern | |
| Strategy Pattern | |
| Command Pattern | |
| State Pattern | |
| Template Method Pattern | |
| Chain of Responsibility | |
| Iterator Pattern | |
| Mediator Pattern | |
| Memento Pattern | |
| Visitor Pattern | |
| Interpreter Pattern | |
| Observer Implementations | |
| Push vs Pull Observer | |
| Event-Driven Architecture | |
| Model-View-Controller (MVC) | |
| Reactive Programming | |
| Strategy Applications | |
| Algorithm Families | |
| Strategy with Factory | |
| Context-Strategy Interaction | |
| Command Pattern Uses | |
| Undo/Redo Operations | |
| Macro Commands | |
| Queuing & Logging | |
| Remote Method Invocation | |
Modern & Architectural Patterns
| Concept | Status |
|---|---|
| Dependency Injection | |
| Constructor Injection | |
| Setter Injection | |
| Interface Injection | |
| IoC Containers | |
| Service Locator Pattern | |
| Architectural Patterns | |
| Model-View-Presenter (MVP) | |
| Model-View-ViewModel (MVVM) | |
| Repository Pattern | |
| Unit of Work Pattern | |
| Data Access Object (DAO) | |
| Data Transfer Object (DTO) | |
| Concurrency Patterns | |
| Producer-Consumer Pattern | |
| Thread Pool Pattern | |
| Future/Promise Pattern | |
| Actor Model | |
| Reactor Pattern | |
| Enterprise Patterns | |
| Business Delegate | |
| Service Layer | |
| Domain Model | |
| Transaction Script | |
| Table Module | |
Functional & Modern Paradigms
| Concept | Status |
|---|---|
| Functional Programming Patterns | |
| Higher-Order Functions | |
| Function Composition | |
| Immutable Objects | |
| Monads & Functors | |
| Option/Maybe Pattern | |
| Reactive Patterns | |
| Observable Streams | |
| Backpressure Handling | |
| Event Sourcing | |
| CQRS Pattern | |
| Microservices Patterns | |
| API Gateway | |
| Circuit Breaker | |
| Bulkhead Pattern | |
| Saga Pattern | |
| Strangler Fig Pattern | |
| Cloud-Native Patterns | |
| Sidecar Pattern | |
| Ambassador Pattern | |
| Anti-Corruption Layer | |
| Backend for Frontend (BFF) | |
Real-world Applications
| Concept | Status |
|---|---|
| Framework Patterns | |
| Spring Framework Patterns | |
| React/Redux Patterns | |
| Angular Patterns | |
| Express.js Patterns | |
| Database Patterns | |
| Active Record Pattern | |
| Data Mapper Pattern | |
| Query Object Pattern | |
| Specification Pattern | |
| Testing Patterns | |
| Mock Object Pattern | |
| Test Double Patterns | |
| Page Object Pattern | |
| Builder Pattern for Tests | |
| Performance Patterns | |
| Object Pool Pattern | |
| Lazy Loading Pattern | |
| Caching Patterns | |
| Copy-on-Write Pattern | |
| Error Handling Patterns | |
| Exception Translation | |
| Retry Pattern | |
| Timeout Pattern | |
| Fallback Pattern | |