ORM Showdown: Fitz vs SQLAlchemy, Alembic, and Pydantic in Cloud Clusters

For a typed ORM with automatic migrations in Python you need to maintain 3 sources of truth (SQLAlchemy + Pydantic + Alembic). In Fitz it's ONE type with decorators. Plus 8× RPS and 5× less memory than SQLAlchemy in a reproducible benchmark. For each entity of your DB in a modern FastAPI you have to