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How does Python asyncio improve performance when handling thousands of concurrent network requests?

Asked on Oct 12, 2025

Answer

Python's `asyncio` module improves performance by using an event loop to manage thousands of concurrent network requests without the need for multiple threads or processes. This allows for asynchronous I/O operations, enabling the program to handle other tasks while waiting for network responses, thus efficiently utilizing system resources.

Example Concept: Python's `asyncio` uses an event-driven architecture to handle I/O-bound tasks concurrently. It leverages coroutines, which are special functions that can pause and resume execution, allowing other coroutines to run in the meantime. This non-blocking behavior is ideal for network operations, as it reduces idle time and enhances throughput by allowing a single thread to manage multiple connections simultaneously.

Additional Comment:
  • `asyncio` is most effective for I/O-bound tasks, not CPU-bound tasks.
  • Coroutines are defined using `async def` and are awaited using the `await` keyword.
  • Using `asyncio.run()` helps manage the event loop lifecycle.
  • Libraries like `aiohttp` are built on `asyncio` for efficient HTTP requests.
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