Master software design patterns through engaging stories and visual narratives. Learn how to solve common software design problems with elegant, reusable solutions.
Design patterns are reusable solutions to common software design problems. They represent best practices evolved over time by experienced software developers. While there are 23 classic design patterns in total, we focus on studying the most important and frequently used ones that will have the greatest impact on your daily coding. Learning these essential design patterns helps you write more maintainable, flexible, and scalable code. Our visual storytelling approach makes these abstract concepts concrete and memorable.
Design patterns are typically categorized into three main groups:
Each pattern in our collection is presented through an engaging story that makes the abstract concept concrete and memorable. We use relatable characters and scenarios to help you understand not just how to implement the pattern, but when and why you should use it.
Patterns that deal with object creation mechanisms
Ensure a class has only one instance and provide a global point of access to it
Define an interface for creating an object, but let subclasses decide which class to instantiate
Provide an interface for creating families of related objects
Construct complex objects step by step with a fluent interface
Patterns that deal with object composition and relationships
Connect incompatible interfaces and integrate legacy systems seamlessly
Master dynamic behavior enhancement through Emma's coffee shop customization adventures
Decouple an abstraction from its implementation
Master API simplification through Ryan's journey from complex microservice chaos to elegant unified interfaces
Patterns that deal with object collaboration and responsibility
Master event-driven programming through Sarah's startup journey from manual chaos to automated notifications
Master flexible algorithms through Alex's e-commerce journey from payment chaos to seamless checkout
Pass a request along a chain of handlers until one processes it
Master request encapsulation through Maya's smart home journey from remote control chaos to automation bliss
If you're new to design patterns, we recommend following this learning path to build a solid foundation:
Begin with the Singleton and Factory Method patterns to understand basic object creation concepts.
Learn how objects relate to each other with Adapter and Decorator patterns.
Understand how objects communicate with Observer and Strategy patterns.
Dive into more complex patterns like Visitor and Interpreter once you're comfortable with the basics.