FastAPI & Async Python Protocol

Build lightning-fast, typed Python REST APIs.

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1. Async Endpoints & Concurrency

1. Define I/O-bound endpoints with async def and await async DB queries.
2. Use standard def for CPU-bound routes so FastAPI executes them in an internal thread pool without blocking event loops.

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2. Pydantic v2 Models

• Use field_validator and model_validator for strict schema enforcement.
• Set model_config = ConfigDict(extra='forbid', str_strip_whitespace=True).