34 lines
933 B
Python
34 lines
933 B
Python
from sqlalchemy import create_engine, MetaData
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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 sqlalchemy.pool import QueuePool
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from .config import settings
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# 创建带连接池监控的引擎
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engine = create_engine(
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settings.DATABASE_URL,
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poolclass=QueuePool,
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pool_pre_ping=True,
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echo=False, # 生产环境建议关闭SQL日志
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pool_size=400,
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max_overflow=600,
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pool_timeout=60, # 增加超时时间到60秒
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pool_recycle=3600, # 1小时回收连接
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pool_reset_on_return='commit' # 归还连接时重置状态
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)
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SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
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Base = declarative_base()
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def get_db():
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"""数据库依赖注入函数"""
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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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def init_db():
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"""初始化数据库表"""
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Base.metadata.create_all(bind=engine) |