default
b25eafc483
性能: SQLite WAL模式、aiohttp Session复用、TCP连接锁+空闲超时、 device_id缓存、WebSocket并发广播、API Key认证缓存、围栏N+1查询 批量化、逆地理编码并行化、新增5个DB索引、日志降级DEBUG 功能: 广播指令API(broadcast)、exclude_type低精度后端过滤、 前端设备总览Tab+多设备轨迹叠加+高亮联动+搜索+专属颜色 via [HAPI](https://hapi.run) Co-Authored-By: HAPI <noreply@hapi.run>
62 lines
1.7 KiB
Python
62 lines
1.7 KiB
Python
from sqlalchemy import event
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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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engine = create_async_engine(
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settings.DATABASE_URL,
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echo=settings.DEBUG,
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connect_args={"check_same_thread": False},
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)
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# Enable WAL mode for concurrent read/write performance
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@event.listens_for(engine.sync_engine, "connect")
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def _set_sqlite_pragma(dbapi_conn, connection_record):
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cursor = dbapi_conn.cursor()
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cursor.execute("PRAGMA journal_mode=WAL")
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cursor.execute("PRAGMA synchronous=NORMAL")
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cursor.execute("PRAGMA cache_size=-64000") # 64MB cache
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cursor.execute("PRAGMA busy_timeout=5000") # 5s wait on lock
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cursor.execute("PRAGMA foreign_keys=ON")
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cursor.close()
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async_session = async_sessionmaker(
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bind=engine,
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class_=AsyncSession,
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expire_on_commit=False,
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)
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class Base(DeclarativeBase):
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pass
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async def get_db() -> AsyncSession:
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"""Dependency injection for async database sessions."""
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async with async_session() as session:
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try:
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yield session
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await session.commit()
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except Exception:
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await session.rollback()
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raise
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finally:
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await session.close()
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async def init_db() -> None:
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"""Create all database tables."""
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async with engine.begin() as conn:
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from app.models import ( # noqa: F401
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AlarmRecord,
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AttendanceRecord,
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BluetoothRecord,
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CommandLog,
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Device,
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HeartbeatRecord,
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LocationRecord,
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)
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await conn.run_sync(Base.metadata.create_all)
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