I've been struggling with async programming for months, but FastAPI's approach finally made it click. Using 'async def' for endpoints and 'await' for database calls just makes sense.
FastAPI's dependency injection system is so elegant. Need a database session? Just add it as a parameter. Need the current user? Same thing. It makes the code so clean and testable.
Use nouns for resources (/users, /posts), HTTP verbs for actions (GET, POST, PUT, DELETE), and return consistent responses. FastAPI's response_model helps enforce this consistency.
Don't make users wait for emails to send or files to process. FastAPI's BackgroundTasks lets you return immediately while work continues in the background.