schedule-management-system/backend/app/db/session.py

from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine, AsyncSession
from backend.app.core.config import settings


engine = create_async_engine(settings.database_url, pool_pre_ping=True)
SessionLocal = async_sessionmaker(bind=engine, class_=AsyncSession, expire_on_commit=False)


async def get_db() -> AsyncSession:
    async with SessionLocal() as session:
        yield session