FastAPI — Types Are the Contract
One misplaced async def stalls the whole server
중급 · Lessons 30 · Lab 10
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Cursor pagination without gaps or duplicates
Prevent lost updates with ETags
A valid token does not grant document ownership
Errors are API contracts too
Verify the exact boundaries of rate limits
Configuration typos must not become defaults
CORS is not authentication
Close resources even when requests fail
Export JSON Lines without collecting every row
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