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async/await for asynchronous operations, distinguishing between async def and def routes and FastAPI's handling of synchronous code in a thread pool.asyncio documentation provides foundational knowledge on asynchronous programming, coroutines, awaitable objects, and the event loop, which are core to FastAPI's performance model.asyncio, event loops, and async/await patterns, offering a comprehensive understanding. The second edition (2022) includes updated content on asyncio.© 2025 ApX Machine LearningEngineered with