DRY Principles in Drupal

Apply DRY (Don't Repeat Yourself) principles to Drupal development. Understand how Drupal's architecture supports code reuse through configuration, services, base classes, traits, plugins, templates, and components.

I need to...

I need to...	Guide
Understand DRY in Drupal's architecture	DRY in Drupal Overview
Use config as single source of truth	Config as Single Source of Truth
Extract shared logic into services	Services for Shared Logic
Extend base classes properly	Base Classes and Inheritance
Use traits for cross-cutting concerns	Traits for Cross-Cutting Concerns
Reuse plugin patterns	Plugin Reuse Patterns
Leverage Twig template inheritance	Twig Template Inheritance
Build reusable UI components with SDC	SDC Component Reuse
Create reusable render patterns	Render Array Patterns
Share hook and event logic	Hook and Event Reuse
DRY across environments	Config Split and Environments
Use recipes for config distribution	Recipes for Reusable Config
Reuse logic in CLI and web contexts	Drush and CLI Reuse
Avoid common over-DRY mistakes	Over-DRY Anti-Patterns
Get a decision framework	Best Practices Decision Framework
Find reference code examples	Code Reference Map