01 Design Patterns in Ruby: A Few Popular Patterns
Singleton, Factory, and Observer patterns in Ruby — what problem each solves, idiomatic Ruby implementations, and how to apply them for maintainable code.

5 posts · reading order (oldest first)
Practical Gang-of-Four style patterns expressed in idiomatic Ruby — creational, structural, and behavioral examples you can apply in real Rails and service codebases.
Singleton, Factory, and Observer patterns in Ruby — what problem each solves, idiomatic Ruby implementations, and how to apply them for maintainable code.
Strategy, Decorator, Template Method, and Command patterns in Ruby — what problem each solves, idiomatic Ruby implementations, and when to reach for them.
In this article, we explore more design patterns in Ruby, including the Proxy, Composite, State, Chain of Responsibility, and Iterator patterns, and discuss how they can be applied to create elegant, maintainable code.
In this article, we explore more design patterns in Ruby, including the Visitor, Memento, Mediator, Flyweight, and Builder patterns, and discuss how they can be applied to create elegant, maintainable code.
In this article, we explore more design patterns in Ruby, including the Prototype, Abstract Factory, Bridge, and Facade patterns, and discuss how they can be applied to create elegant, maintainable code.