10:DB_URL = settings.DATABASE_URL
14:sync_engine = create_engine(DB_URL, pool_pre_ping=True, pool_size=5, max_overflow=10)
15:SyncSession = sessionmaker(bind=sync_engine, expire_on_commit=False)
17:async_engine = create_async_engine(DB_URL, pool_pre_ping=True, pool_size=5, max_overflow=10)
18:AsyncSessionLocal = async_sessionmaker(async_engine, class_=AsyncSession, expire_on_commit=False)
32:def check_db_health() -> bool:
=== test_send.py session usage ===
22:from app.db.session import SyncSessionLocal
121:        with SyncSessionLocal() as s: