27 lines
522 B
Python
27 lines
522 B
Python
"""异步数据库引擎和会话管理"""
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from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
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from sqlalchemy.orm import DeclarativeBase
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from app.config import settings
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# 异步引擎
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engine = create_async_engine(
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settings.DATABASE_URL,
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echo=False,
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pool_size=20,
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max_overflow=10,
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)
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# 异步会话工厂
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async_session = async_sessionmaker(
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engine,
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class_=AsyncSession,
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expire_on_commit=False,
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)
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# 声明式基类
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class Base(DeclarativeBase):
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pass
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