Design Patterns Tutorial — One-Page Cheat Sheet

The Gang of Four patterns in modern code.

Foundations

• Patterns HOME
• Intro
• SOLID
• DRY / KISS / YAGNI
• Classes vs Composition

Creational

• Singleton
• Factory Method
• Abstract Factory
• Builder
• Prototype

Structural

• Adapter
• Bridge
• Composite
• Decorator
• Facade
• Flyweight
• Proxy

Behavioural

• Chain of Responsibility
• Command
• Iterator
• Mediator
• Memento
• Observer
• State
• Strategy
• Template Method
• Visitor

Modern Patterns

• Dependency Injection
• Repository
• MVC / MVVM
• Event Bus
• Pub/Sub
• CQRS
• Event Sourcing
• Saga

Examples

• Examples
• Cheatsheet
• Quiz
• Exercises
• Bootcamp
• Certificate
• Summary