* update connetion handling

Author: White4Shadow

service/backend/database.py

@@ -5,7 +5,10 @@
 SQLALCHEMY_DATABASE_URL = "sqlite:////app/db/sqlitedb.db"
 
 engine = create_engine(
-    SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
+    SQLALCHEMY_DATABASE_URL,
+    connect_args={"check_same_thread": False},
+    pool_size=20,
+    max_overflow=30
 )
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)