fastapi-best-practices

Structure a FastAPI project for maintainability by adopting a domain-driven layout with clear separation of concerns. Organize code into routers, schemas, models, services, and dependencies to ensure scalable and testable code across teams.

Organize domain-driven routes in FastAPI by grouping modules by domain, such as auth or payments. Place router.py, schemas.py, and models.py inside src/{domain}/ directories to establish consistent routing patterns and clear separation of concerns.

Use async versus sync routes in FastAPI based on I/O blocking operations. The best-practice structure provides guidelines for async vs sync routes to ensure optimal performance and maintainable endpoint implementations.

Manage Pydantic models and settings in a scalable FastAPI app by applying standardized conventions. The structure provides guidelines for robust Pydantic usage and separates global settings from domain-specific settings for clarity.

Yes, this FastAPI structure supports database migrations by applying standardized migration practices. The domain-oriented layout ensures migrations are handled consistently across new projects and refactors for scalable code.

Yes, you can refactor an existing FastAPI application into this domain-oriented structure. The conventions apply to refactors and endpoint implementations, ensuring your existing codebase becomes scalable and testable.