27 lines
880 B
Python
27 lines
880 B
Python
from typing import AsyncGenerator
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from sqlalchemy.ext.asyncio import create_async_engine, AsyncSession, async_sessionmaker
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from sqlalchemy.orm import DeclarativeBase
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from sqlalchemy import text
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from app.config import settings
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engine = create_async_engine(settings.database_url, echo=False, connect_args={"check_same_thread": False})
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async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)
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class Base(DeclarativeBase):
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pass
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async def init_db():
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async with engine.begin() as conn:
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await conn.run_sync(Base.metadata.create_all)
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# 启用 WAL 模式，提升并发读写性能
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await conn.execute(text("PRAGMA journal_mode=WAL"))
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await conn.execute(text("PRAGMA busy_timeout=5000"))
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async def get_db() -> AsyncGenerator[AsyncSession, None]:
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async with async_session() as session:
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yield session
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