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
"A new massacre against the #Alawites in the city of #Latakia, in the #Dattour neighborhood, al-Mazar junction.
I beg all segments of the Syrian people, especially the #Druze, #Kurds, and any remaining members of the #Sunni community who still have a little humanity left in their hearts, to take to the streets in protest to stop these massacres against the innocent. These #massacres are not from yesterday, they are happening today, and as of moments ago, they are still being carried out by Syrian members of Hay’at Tahrir al-Sham #HTS, wearing their official uniforms.
Please, save those who remain."
https://t.me/CoastSyrian24/771
Systematic Attacks on Religious Minorities' Shrines and Places of Worship in Syria
W #Hama: An extremist terrorist group has destroyed a religious shrine belonging to the #Alawite community, known as “Sheikh Muhammad al-Maghribi,” located in the village of #Asila in Masyaf, in the Ghab Plain in the rural countryside of Hama Governorate, yesterday 21 March 2026.
#Alawite: It is worth noting that attacks on Alawite religious shrines began following the fall of the regime, reaching their peak during the #massacres carried out against Alawites on the Syrian coast by al-Jolani’s forces. Incidents of assault on Alawite shrines have continued repeatedly, to the point where barely a month passes without an incident involving the bombing, desecration, or burning of shrines across various Alawite regions.
#Druze: Similarly, shrines belonging to the Druze community were subjected to comparable attacks, including vandalism, arson, and bombings, during the massacres of July 2025 in #Suwayda, carried out by the forces of al-Jolani’s terrorist regime.
#Christians: A church in #Damascus was also bombed in June 2025, in addition to attacks on churches in #Homs and the rural Homs region in the #alQusayr area. The massacres that took place in As-#Suwayda likewise saw the burning and destruction of three churches.