During April 2026, this developer refactored core database interactions in the langgenius/dify repository, focusing on backend maintainability and scalability. They implemented a unified, session-based approach using SQLAlchemy and Python, introducing a session factory and context-managed sessions to standardize transaction management and resource handling. This work migrated event handlers, account commands, file factory builders, and mail tasks with OAuth data sources to the new pattern, reducing technical debt and laying groundwork for future enhancements. By leveraging Flask for backend development and improving database management practices, the changes established a more consistent and reliable foundation for ongoing feature delivery and code maintenance.