FASTAPI ARCHITECTURE

FASTAPI ARCHITECTURE FAST MODERN HIGH PERFORMANCE ASYNC SUPPORT PRODUCTION READY PROJECT STRUCTURE fastapi-project/ app/ main.py # Entry point api/ __init__.py routes/ __init__.py users.py # User routes items.py # Item routes auth.py # Auth routes core/ config.py # Settings security.py # Auth & Security schemas/ __init__.py user.py # Pydantic schemas item.py # Pydantic schemas services/ __init__.py user_service.py # Business logic item_service.py # Business logic models/ __init__.py user.py # SQLAlchemy model item.py # SQLAlchemy model database/ __init__.py database.py # DB Connection dependencies/ __init__.py deps.py # Dependencies tests/ .env # Environment vars .gitignore # Git ignore requirements.txt # Dependencies README.md # Project docs WHAT IS FASTAPI? FastAPI is a modern, fast (high-performance) web framework for building APIs with Python 3.7+ based on standard type hints and async support. BENEFITS Very Fast Performance Automatic API Documentation Type Safety with Pydantic Async Support Easy to Learn and Use HOW IT WORKS CLIENT Sends HTTP Request ROUTER Matches request to the appropriate endpoint SERVICE Executes business logic REPOSITORY Performs database operations DATABASE Stores and retrieves data ARCHITECTURE OVERVIEW ROUTES (API LAYER) Handles incoming HTTP requests and defines API endpoints. SERVICES (BUSINESS LAYER) Contains business logic and application rules. REPOSITORIES (DATA LAYER) Handles database operations and data access. MODELS (DB LAYER) SQLAlchemy models representing database tables. CONFIGURATION Application settings, database connection, and environment configs. BEST PRACTICES Keep endpoints thin, move logic to services Use Pydantic models for request/response validation Use dependency injection for reusable components Handle exceptions globally Use async functions for better performance Organize code by feature (not by type) USED AND TRUSTED BY Microsoft Uber tinder GitHub strapi Many more...