Will It Vibe?time.sleep() inside an async route handler
Part of Code Quality & Syntax, which counts for 20% of the overall score. When this check fires it deducts 8 points from that category, once per scan, no matter how many places it turns up.
What it detects
time.sleep() blocks the OS thread running the asyncio event loop, so every other request being served by that worker stalls for the full duration of the sleep, not just this request.
Why it matters
FastAPI runs all of your async def handlers on one event loop thread per worker. A blocking time.sleep() call freezes that whole thread, so every other request the worker is currently handling waits behind it, even requests that have nothing to do with this route. Under real traffic this turns one slow endpoint into a latency spike for the entire service.
How to fix it
Replace time.sleep(n) with await asyncio.sleep(n) inside async def handlers. If the delay is simulating work for a background job rather than the request itself, move it into a BackgroundTasks callback or a proper task queue (Celery, arq, RQ) instead of sleeping inline.
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