Update Contec monitor service, parser, dashboard and tunneling

database.py

@@ -1,9 +1,12 @@
 from sqlalchemy import create_engine
+from sqlalchemy.pool import NullPool
 from sqlalchemy.orm import sessionmaker, declarative_base
 from config import settings
 
 engine = create_engine(
-    settings.database_url, connect_args={"check_same_thread": False}
+    settings.database_url,
+    connect_args={"check_same_thread": False},
+    poolclass=NullPool
 )
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)