Domain-Driven Development

Code quality framework that embeds Clean Architecture, SOLID principles, and Domain-Driven Design patterns into your development workflow through persistent memory updates and contextual skills.

Focused on:

• Clean Architecture - Separation of concerns with layered architecture boundaries

• Domain-Driven Design - Ubiquitous language and bounded contexts for complex domains

• SOLID Principles - Single responsibility, open-closed, and dependency inversion patterns

• Code Quality Standards - Consistent formatting, naming conventions, and anti-pattern avoidance

Overview

The DDD plugin implements battle-tested software architecture principles that have proven essential for building maintainable, scalable systems. It provides commands to configure AI-assisted development with established best practices, and skills that guide code generation toward high-quality patterns.

The plugin is based on foundational works including Eric Evans' "Domain-Driven Design" (2003), Robert C. Martin's "Clean Architecture" (2017), and the SOLID principles that have become industry standards for object-oriented design.

These principles address the core challenge of software development: managing complexity. By establishing clear boundaries between business logic and infrastructure, using domain-specific naming, and following proven design patterns, teams can build systems that remain understandable and modifiable as they grow.

Quick Start

# Install the plugin
/plugin install ddd@NeoLabHQ/context-engineering-kit

# Set up code formatting standards in CLAUDE.md
/ddd:setup-code-formating

# The software-architecture skill activates automatically when writing code
# alternatively, you can ask Claude to use DDD directly
> claude "Use DDD skill to implement user authentication"

Usage Examples

setup-code-formating command

Establishes consistent code formatting rules and style guidelines by updating your project's CLAUDE.md file with enforced standards.

See setup-code-formating.md for detailed command documentation.

software-architecture skill

The software-architecture skill provides comprehensive guidance for writing high-quality, maintainable code. It activates automatically when users engage in code writing, architecture design, or code analysis tasks.

See software-architecture.md for detailed skill documentation.

Foundation

The DDD plugin is based on foundational software engineering literature that has shaped modern development practices:

Core Literature

• Domain-Driven Design (Eric Evans, 2003) - Introduced ubiquitous language, bounded contexts, and strategic design patterns for managing complex domains

• Clean Architecture (Robert C. Martin, 2012/2017) - Defines dependency rules and layer boundaries for maintainable systems

• SOLID Principles (Robert C. Martin, 2000s) - Five principles of object-oriented design that promote maintainability

Key Concepts Applied

Concept	Source	Application in Plugin
Ubiquitous Language	Evans (DDD)	Domain-specific naming conventions
Bounded Contexts	Evans (DDD)	Module and file organization
Dependency Inversion	Martin (SOLID)	Layer separation rules
Single Responsibility	Martin (SOLID)	Function and file size limits
Separation of Concerns	General	Business logic isolation