FastAPI Best Practices

Project Structure

  • Use proper directory structure
  • Implement proper module organization
  • Use proper dependency injection
  • Keep routes organized by domain
  • Implement proper middleware
  • Use proper configuration management

API Design

  • Use proper HTTP methods
  • Implement proper status codes
  • Use proper request/response models
  • Implement proper validation
  • Use proper error handling
  • Document APIs with OpenAPI

Models

  • Use Pydantic models
  • Implement proper validation
  • Use proper type hints
  • Keep models organized
  • Use proper inheritance
  • Implement proper serialization

Database

  • Use proper ORM (SQLAlchemy)
  • Implement proper migrations
  • Use proper connection pooling
  • Implement proper transactions
  • Use proper query optimization
  • Handle database errors properly

Authentication

  • Implement proper JWT authentication
  • Use proper password hashing
  • Implement proper role-based access
  • Use proper session management
  • Implement proper OAuth2
  • Handle authentication errors properly

Security

  • Implement proper CORS
  • Use proper rate limiting
  • Implement proper input validation
  • Use proper security headers
  • Handle security errors properly
  • Implement proper logging

Performance

  • Use proper caching
  • Implement proper async operations
  • Use proper background tasks
  • Implement proper connection pooling
  • Use proper query optimization
  • Monitor performance metrics

Testing

  • Write proper unit tests
  • Implement proper integration tests
  • Use proper test fixtures
  • Implement proper mocking
  • Test error scenarios
  • Use proper test coverage

Deployment

  • Use proper Docker configuration
  • Implement proper CI/CD
  • Use proper environment variables
  • Implement proper logging
  • Use proper monitoring
  • Handle deployment errors properly

Documentation

  • Use proper docstrings
  • Implement proper API documentation
  • Use proper type hints
  • Keep documentation updated
  • Document error scenarios
  • Use proper versioning