27 lines
668 B
Python
27 lines
668 B
Python
from sqlalchemy import create_engine
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import sessionmaker
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from app.core.config import settings
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engine = create_engine(
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settings.DATABASE_URL,
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pool_pre_ping=True,
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pool_recycle=3600,
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echo=settings.DEBUG,
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)
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# 避免 commit 后 ORM 实例自动过期，导致读取字段时回表 SELECT（高频接口会显著拖慢）
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, expire_on_commit=False, bind=engine)
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Base = declarative_base()
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def get_db():
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"""获取数据库会话"""
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db = SessionLocal()
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try:
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yield db
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finally:
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db.close()
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