LargeApplicationTemplate

A robust, production-ready template for large-scale Python applications. Built with Clean Architecture and Domain-Driven Design (DDD) principles, it provides a strong foundation to start scalable and maintainable projects.

✨ Key Features

• Isolated Business Logic
  Keep core domain logic independent of frameworks and infrastructure.

• CQRS (Command Query Responsibility Segregation)
  Separate read and write operations to improve scalability and clarity.

• Race Condition Prevention
  Includes mechanisms and automated tests to handle concurrent operations safely.

• Message Bus Pattern
  Supports domain events and asynchronous workflows with a built-in message bus.

• Framework-Agnostic Core
  Comes with a lightweight Flask API layer, which can easily be replaced with FastAPI, Django, etc.

🧩 Technologies Used

• Python 3.x
• Flask (for demonstration purposes, not tightly coupled)
• Pytest (for automated testing)
• Clean Architecture principles
• Domain-Driven Design (DDD)
• In-memory and event-based mechanisms

📌 Use Case

This template doesn’t try to be spectacular—it focuses on clarity, modularity, and long-term maintainability. It's ideal for:

• Starting complex business applications
• Developers and teams following DDD
• Systems where scalability and testability are important from day one

🆚 Comparison with Other Templates

Most Python project templates focus on wiring frameworks or showcasing libraries. This template goes deeper by demonstrating:

• Domain isolation from infrastructure
• Realistic use of DDD and Clean Architecture
• Readiness for production and team collaboration

🚀 Getting Started

cd docker/development/
docker compose up