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
We're excited to be able to support the mission of Tonstarter in bringing #builders, #community and #capital together to accelerate the growth of #TON ecosystem.
Let's keep working towards building a future for TON together! ✨
Full announcement here.
//
About Tonstarter:
▫️Tonstarter is the first TON-native launchpad, enabling crypto projects to raise capital in a decentralized, safe, and user-friendly environment.
Find out more here.
Congratulations Tonstarter on closing a $1.5 million investment seed round! 🎉
We're proud to support your mission to unite #builders, #community, and #capital to accelerate the #growth of TON ecosystem ⚡
It's exciting to be building a bright future together 🫡
Full announcement here.
🚀 Market Conditions Present Opportunities for Strategic Investments, Says DWF Labs Co-Founder
The cryptocurrency market is currently experiencing a "very boring" phase, according to ChainCatcher. DWF Labs Co-Founder Andrei Grachev expressed on social media that while participants may engage in discussions or humor, significant activities such as financing, trading, investing, and business expansion are quietly underway.
Grachev noted that the current market environment poses challenges for major projects, exchanges, and companies to make new listings or significant announcements, as high-profile actions may not be effective at this time. He advised maintaining patience in investment portfolios and waiting for more opportune moments.
He emphasized that the market is not in decline but rather offers opportunities for seemingly mundane activities, such as buying and holding Bitcoin long-term or engaging in altcoin speculation. Grachev concluded that there is still much to do for builders and investors, while smaller investors should focus on learning, avoid lamenting losses, and enjoy the market they have chosen to enter.
#cryptocurrency#marketconditions#investmentopportunities#DWF Labs #AndreiGrachev#bitcoin#altcoin#longtermholding#speculation#investors#builders#patience#learning#BTC