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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Despite $LIT continuing to drop, a whale has deposited $10M $USDC into #Lighter and is hedging on it.
The whale opened a $LIT short position with 5x leverage and spent $2.2M to buy 1.059M $LIT at $2.08 on spot and still holds $2.788M $USDC and is likely to buy more.
https://app.lighter.xyz/explorer/accounts/0x2261207edc313bBFe96ddb98618b87919b9F1AeF
https://x.com/OnchainLens/status/2010947308557660544
Follow @onchainlens for more onchain updates
A 7-day-old wallet deposited $2M $USDC into #Lighter to increase its LIT size.
In the past 7 days, the whale deposited $4M $USDC and bought 1,285,010 $LIT for $3.8M at a price of $2.96 and still has $193,717 $USDC left to buy more.
https://app.lighter.xyz/explorer/accounts/0x0b4a2c0757cDfDF88039baa6bE9A4677560105B1
https://x.com/OnchainLens/status/2008788217492107762
Follow @onchainlens for more onchain updates
A whale sold 52.1 $WBTC ($4.86M), deposited $3.36M $USDC into #Lighter, and bought 1,119,001 $LIT at a price of $3.
https://app.lighter.xyz/explorer/accounts/0x793918C6f668E5C4283a0FD64d57046588a10b5a
https://x.com/OnchainLens/status/2008212416006680740
Follow @onchainlens for more onchain updates
A newly created wallet deposited $2.89M $USDC into #Lighter and bought 991,458 $LIT at a price of $2.92.
Address: 0x51bec3e10335c687eedf2db7d532c2d9769df201
https://x.com/OnchainLens/status/2008203056740225183
Follow @onchainlens for more onchain updates
Jez (@izebel_eth) deposited $908,412 $USDC into #Lighter to buy more $LIT.
Currently, Jez holds 1,109,196 $LIT, valued at $2.8M, in 2 of the wallets.
https://app.lighter.xyz/explorer/accounts/0xf78310Ed6641e6c4E221E9d676440aC8645d3afE
https://app.lighter.xyz/explorer/accounts/0xaa7577a7A27aa7FcF6d0eC481B87Df3aD0F6a88E
https://x.com/OnchainLens/status/2007370788966674808
Follow @onchainlens for more onchain updates
A whale deposited $4.03M $USDC into #Lighter and spent $3.8M to buy 1.63M $LIT at a price of $2.33. The wallet still holds 227,099 $USDC, likely to buy more. https://app.lighter.xyz/explorer/accounts/0xFb94D3404c1d3D9D6F08f79e58041d5EA95AccfA https://x…
A whale deposited $4.03M $USDC into #Lighter and spent $3.8M to buy 1.63M $LIT at a price of $2.33.
The wallet still holds 227,099 $USDC, likely to buy more.
https://app.lighter.xyz/explorer/accounts/0xFb94D3404c1d3D9D6F08f79e58041d5EA95AccfA
https://x.com/OnchainLens/status/2006183303637000315
Follow @onchainlens for more onchain updates
Since Telegram announced #Lighter integration in its app,
a #Hyperliquid whale didn’t wait.
He dumped 12.2K $HYPE ($449.1K), placed another 10.4K $HYPE ($386K) as a sell order, and withdrew $1.26M $USDC today.
Notably, he had already closed his multi-million dollar $HYPE longs right after the April 3 announcement.
Lifetime PnL: $1.72M+
Does he know something we don’t, or is this just another wrong FOMO trade?
https://app.coinmarketman.com/hypertracker/wallet/0x89abe626dc7f010138bc08e0100f1e4e13c30d32
https://x.com/OnchainLens/status/2041344975301190049
Follow @onchainlens for more onchain updates
A whale named "Einstein" on Debank withdrew $3M $USDC from #Lighter, deposited it into #HyperLiquid, and bought 90,780 $HYPE at $33.05.
https://app.coinmarketman.com/hypertracker/wallet/0xc7Bfd896cc6A8BF1D09486Dd08f590691b20C2Ff
https://x.com/OnchainLens/status/2016365523882356870
Follow @onchainlens for more onchain updates
A whale deposited $1.8M $USDC into #HyperLiquid and opened a $LIT long position with 3x leverage.
The whale also holds a $BTC short position on #Lighter, with 50x leverage valued at over $17M.
https://app.coinmarketman.com/hypertracker/wallet/0xA71d664F7899Dbe4aC768C1b162c4c5610e978AA
https://x.com/OnchainLens/status/2005427685103931676
Follow @onchainlens for more onchain updates.