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Concurrency & performance

asyncio, threading, multiprocessing, and profiling-friendly performance patterns.

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Concurrency & performance medium

How to Run Coroutines Concurrently with asyncio.gather in Python

Run multiple async coroutines concurrently and collect their results in the order they were passed.

asyncio concurrency gather
Python 
import asyncio


async def fetch_data(name: str, delay: float) -> str:
    """Simulate an async operation (e.g., API call) with a delay."""
    await asyncio.sleep(delay)
    return f"{name} data (after {delay}s)"


async def main() -> None:
    """Run multiple coroutines concurrently with asyncio.gather."""
    resul…
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