Decoding asyncio.run_in_executor's Hidden Bottlenecks and a Scalable Fix

The problem with run_in_executor If you've ever needed to offload CPU-bound work from an asyncio event loop, you've written something like this: import asyncio from concurrent.futures import ProcessPoolExecutor def heavy(n: int) -> int: return sum(i * i for i in range(n)) async def main(): loop = as