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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Some of us prefer to have some fun while also learning new things about our favorite subjects😎
#videogame#privacy#fun#security
So, in this post, we recommend three video games that are fun, but also help you learn a lot about data privacy, cybersecurity, and related topics💻
🔢Hacknet: A famous hacker known as "Bit" has died, and you must investigate his death. Released in 2015, this game teaches you about real-world hacking techniques and cybersecurity principles. You learn to navigate networks, analyze data, and see the importance of data privacy.
🔢Orwell: It's a narrative-driven game in which you are a government operative who monitors citizens' data to prevent crime. The game raises questions about privacy, surveillance, and the ethical implications of data collection.
🔢Cybersecurity Lab: This game is designed for students, and it puts them in engaging scenarios and challenges to teach them about cybersecurity concepts, including data privacy.
Hope you have a lot of fun playing these. Best wishes🌹
🆔Privacy
Alla ricerca di un qui ed un ora dalla forma conveniente per quanto ridotta all'osso.
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