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FastAPI Foundations
Routes, path/query params, request/response models with Pydantic, dependency injection, async vs sync endpoints. The FastAPI mental model.
Module Content
FastAPI Basics — Routes, Path & Query Params
From zero to a running API. Routes, methods, path params, query params, automatic OpenAPI docs. FIND_VIDEO: search 'fastapi tutorial routes path query parameters' — recommended channel: ArjanCodes / Tech with Tim. Aim for 11 min or under.
Recap — The FastAPI Mental Model
What FastAPI is, why it's the modern Python default, and the patterns that make it click.
Request/Response Models with Pydantic
Pydantic models for input validation and output serialization. The single biggest source of FastAPI's quality. FIND_VIDEO: search 'fastapi pydantic models tutorial' — recommended channel: ArjanCodes / Tech with Tim. Aim for 10 min or under.
Recap — Validation, Serialization, Error Responses
Pydantic v2 essentials for APIs: Field constraints, validators, error responses, response schemas.
Dependency Injection in FastAPI
The reusable abstraction at the heart of FastAPI. get_db, get_current_user, and how to compose dependencies. FIND_VIDEO: search 'fastapi dependency injection tutorial' — recommended channel: ArjanCodes / Tech with Tim. Aim for 10 min or under.
Recap — DI Patterns: get_db, get_current_user, get_settings
The canonical FastAPI dependency patterns and how to compose them.
Async Endpoints — When to Use Them
Async vs sync endpoints in FastAPI. When async actually helps, and the libraries that make it work. FIND_VIDEO: search 'fastapi async endpoints tutorial' — recommended channel: ArjanCodes / mCoding. Aim for 9 min or under.
Recap — Sync vs Async Endpoints
How FastAPI handles each, when to choose which, and the async-library ecosystem.