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
#DerpFest#ROM#B#May#diting#viper#Baklava#signed#QPR2
DerpFest 16 Stable OFFICIAL | Android 16.2
Device: Xiaomi 12T Pro (diting)
Alias: Redmi K50 Ultra
Date: 2026-05-07
⚡️Fast Download
🧑💻Support Group
🎁PayPal
✨May Release✨
Security & Fixes
- May Security Patch
- Recent App Lock fixed (clear all dismiss)
Features
- Upstreamed GameBar
- Upstreamed Dynamic Bar
- New Volume Dialog customization
- Music Visualizer improved/back
- GApps debloated
- ViPER4Android included
Regressions and Tinkering
- Sidebar sometimes gets stuck and needs to be retoggled
- Dynamic Bar crashes FireFox (specifically) on video playback; Use any other browser or turn off Dynamic Bar when watching videos.
- Custom statusbar icon sets as of now are included, but not functional.
Others
- A valid keybox is required to achieve play integrity.
- Achieve strong integrity without modules using below steps:
1. Disable forcing strong (enable top toggle in spoofing settings)
2. Load valid keybox.xml and pif.json in spoofing
3. Get rid of any integrity related modules if you have any
- if you used modules before, it is recommended to remove them, update, and then add them back
-> some users had bootloops with e.g. LSPosed.
Special Thanks:
- kenway214 for GameBar 👌
- Jean for donating telegram premium! 🫶
- Jean for Fast Mirror! ⚡️
- All my testers
- My core team - guys, you are truly the best! 😌
by: P.A.N.Z.
#DerpFest#ROM#B#April#diting#viper#micam#Baklava#signed#QPR2
DerpFest 16 Stable OFFICIAL | Android 16.2
Device: Xiaomi 12T Pro | Redmi K50 Ultra (diting)
Date: 2026-04-07
⚡️Fast Download
🧑💻Support Group
🎁PayPal
✨Initial STABLE Release✨
Security & Fixes
- April Security Patch
Features
- Android 16.2 (qpr2) in all its glory
- Mi Cam included & fully functional
- GApps debloated
- Dynamic Bar (~Dynamic Island)
- ViPER4Android included
Regressions and Tinkering
- Dynamic Bar crashes Firefox (specifically) in video playback; use any other browser or disable Dynamic Bar while watching videos.
- Reconnecting to 5G from wifi might take a few seconds, but then works fine.
- Custom statusbar icon sets as of now are included, but not functional.
Others
- A valid keybox is required to achieve play integrity.
- Achieve strong integrity without modules using below steps:
1. Disable forcing strong (enable top toggle in spoofing settings)
2. Load valid keybox.xml and pif.json in spoofing
3. Get rid of any integrity related modules if you have any
- if you used modules before, it is recommended to remove them, update, and then add them back
-> some users had bootloops with e.g. LSPosed.
Special Thanks:
- kenway214 for GameBar 👌
- Bomboozler for his awesome contributions
- jezzay for finding ksu commits
- Einargednochsson for BT audio in cars fix 🤝
- Jean for donating telegram premium! 🫶
- Jean for Fast Mirror! ⚡️
- All my testers
- My core team - guys, you are truly the best! 😌
by: P.A.N.Z.
#DerpFest#ROM#B#March#diting#viper#micam#Baklava#signed#QPR2
DerpFest 16 Stable Public Beta OFFICIAL | Android 16.2
Device: Xiaomi 12T Pro | Redmi K50 Ultra (diting)
Date: 2026-03-13
⚡️Fast Download
🧑💻Support Group
🎁PayPal
✨Initial Public Beta Release✨
Security & Fixes
- March Security Patch
Features
- Android 16.2 (qpr2) in all its glory
- Mi Cam included & fully functional
- ViPER4Android included
Regressions and Tinkering
- Vibration statusbar icon doesn't show
- Reconnecting to 5G from wifi might take a few seconds, but then works fine.
- Custom statusbar icon sets as of now are included, but not functional.
Others
- A valid keybox is required to achieve play integrity.
- Achieve strong integrity without modules using below steps:
1. Disable forcing strong (enable top toggle in spoofing settings)
2. Load valid keybox.xml and pif.json in spoofing
3. Get rid of any integrity related modules if you have any
- if you used modules before, it is recommended to remove them, update, and then add them back
-> some users had bootloops with e.g. LSPosed.
Special Thanks:
- kenway214 for GameBar 👌
- Bomboozler for his awesome contributions
- jezzay for finding ksu commits
- Einargednochsson for BT audio in cars fix 🤝
- Jean for donating telegram premium! 🫶
- Jean for Fast Mirror! ⚡️
- All my testers
- My core team - guys, you are truly the best! 😌
by: P.A.N.Z.