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Design Pattern

Design patterns are reusable summaries of object-oriented design experience, divided into three categories: creational, structural, and behavioral.

Purpose

Apply mature design experience to common design problems, improving code maintainability.

Mechanism

Creational (factory, singleton, builder): object creation. Structural (adapter, decorator, proxy): structural composition. Behavioral (observer, strategy, command): object interaction. The 23 GoF patterns are the classic set.

Use cases

  • Object-oriented design
  • Code architecture
  • Team communication

Related terms

Decorator Pattern
The decorator pattern adds responsibilities to an object dynamically without changing its class, layering behavior through a chain of wrappers as an alternative to inheritance-based extension.
GLOSSARY

Related tutorials

How to Implement the Saga Pattern
An advanced-level guide covering saga, distributed-transaction, microservices. Includes step-by-step instructions, common errors, troubleshooting tips, and security considerations for saga.
TUTORIAL

References