Factory Method
Defines an interface for creating an object, but lets subclasses decide which class to instantiate. Promotes loose coupling by deferring object creation to subclasses.
Factory Method: Let Subclasses Create
Deferring object creation to subclasses through one overridable method.
Factory in Production: DI and Parsers
Factories in dependency injection, parser selection, and provider choice.
Advanced Factory: Abstract Factories and Registries
Factories of factories, and registries that keep creation open-closed.
Factory: Review & Mastery Quiz
Scenario questions on deferring creation, registries, and DI.
Free Books & Guides
Refactoring.Guru — Factory Method
The definitive modern guide to the Factory Method pattern. Clear explanations, UML diagrams, real-world analogies, and code examples in multiple languages.
SourceMaking — Factory Method
A comprehensive companion guide covering the Factory Method pattern with detailed rules of thumb, criticisms, and robust code snippets.
GoF Design Patterns — Factory Method
The original Gang of Four book describing the pattern. Available in the "Design Patterns: Elements of Reusable Object-Oriented Software" on Wikipedia.
Official Documentation
Refactoring.Guru — Factory Method
The definitive modern guide to the Factory Method pattern. Clear explanations, UML diagrams, real-world analogies, and code examples in multiple languages.
Wikipedia — Factory Method Pattern
Wikipedia article explaining the Factory Method pattern with examples and history.
Video Courses
freeCodeCamp — Design Patterns Course
A comprehensive multi-hour video course covering all major design patterns with implementations in JavaScript and TypeScript.
Design Patterns in Modern JavaScript Playlist
YouTube playlist covering creational, structural, and behavioral patterns with clear code walkthroughs.
Web Dev Simplified — Factory Method
Clear, concise video tutorials covering design patterns with practical examples.
Practice & Examples
Awesome Low-Level Design (GitHub)
A curated collection of free LLD resources, pattern implementations, and interview problems across multiple languages.
Design Patterns Implementation (GitHub)
The most popular open-source collection of design pattern implementations with detailed explanations.
Refactoring.Guru Examples in Factory Method
Code examples of the Factory Method pattern in TypeScript, Python, Java, and more.