TGINSIGHT SIMILAR POSTS
Изворен канал @pythonotes · Post #425 · 20 апр.
Недавно делал быстрый прототип асинхронного приложения в котором требовалось вызывать много синхронного кода. Да, я знаю, что это не лучший дизайн, но нужно было быстрое решение на один процесс и без очередей. Поэтому я выполнял код в потоках. Выглядело это примерно так: from fastapi.concurrency import run_in_threadpool async def execute(data: DataRequest) -> DataResponse: try: result = await run_in_threadpool(sync_function, data) return DataResponse(data=result) except Exception as e: return DataResponse( error=str(e), success=False, ) В общем работает нормально. Для всех вызовов под капотом используется общий тредпул, всё работает предсказуемо. Но потребовалось изменить количество запускаемых в пуле потоков (по умолчанию создается 40 воркеров). Так как дело происходит с FastAPI, делается это через lifespan используя настройки anyio: import anyio @asynccontextmanager async def lifespan(app: FastAPI): limiter = anyio.to_thread.current_default_thread_limiter() limiter.total_tokens = 100 yield # если вдруг нужно вернуть обратно limiter.total_tokens = 40 Зачем менять количество воркеров? - уменьшить, если оперативки мало (один тред занимает ~8мб) - увеличить чтобы выдержать нагрузку Если есть предложения получше при тех же вводных - предлагайте😉 #async
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Пребарај: #vision11
@vision11official · Post #1625 · 26.02.2024 г., 11:30
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@vision11official · Post #1620 · 18.02.2024 г., 09:54
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@vision11official · Post #1619 · 16.02.2024 г., 11:31
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@vision11official · Post #1618 · 15.02.2024 г., 10:48
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@vision11official · Post #1617 · 14.02.2024 г., 12:31
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@vision11official · Post #1615 · 10.02.2024 г., 12:52
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@vision11official · Post #1613 · 27.01.2024 г., 11:31
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@vision11official · Post #1612 · 27.01.2024 г., 05:14
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@vision11official · Post #1608 · 20.01.2024 г., 06:01
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@vision11official · Post #1607 · 18.01.2024 г., 13:07
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@vision11official · Post #1605 · 16.01.2024 г., 07:14
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@vision11official · Post #1602 · 10.01.2024 г., 13:30
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