hankin
423baff73b
- Docker bridge 网络隔离（8000 端口封死） - Gunicorn 4 Worker 多进程 - Alembic 数据库迁移基线 - 日志轮转 20m×3 - JWT 密钥 + DB 密码 + CORS 收紧 - 3-2-1 备份链路（NAS + R740-B 冷备） - 连接池 pool_pre_ping + pool_recycle=3600
38 lines
798 B
Python
38 lines
798 B
Python
"""
|
|
异步数据库引擎 & Session 工厂
|
|
"""
|
|
|
|
from collections.abc import AsyncGenerator
|
|
|
|
from sqlalchemy.ext.asyncio import (
|
|
AsyncSession,
|
|
async_sessionmaker,
|
|
create_async_engine,
|
|
)
|
|
|
|
from app.core.config import settings
|
|
|
|
engine = create_async_engine(
|
|
settings.DATABASE_URL,
|
|
echo=settings.DEBUG,
|
|
pool_size=20,
|
|
max_overflow=10,
|
|
pool_pre_ping=True,
|
|
pool_recycle=3600,
|
|
)
|
|
|
|
async_session_factory = async_sessionmaker(
|
|
engine,
|
|
class_=AsyncSession,
|
|
expire_on_commit=False,
|
|
)
|
|
|
|
|
|
async def get_db() -> AsyncGenerator[AsyncSession, None]:
|
|
"""FastAPI Dependency —— 每个请求一个 Session，自动关闭"""
|
|
async with async_session_factory() as session:
|
|
try:
|
|
yield session
|
|
finally:
|
|
await session.close()
|