Worked on the django/django repository to address a memory management issue in the database connection lifecycle, focusing on backend development and database management using Python. Implemented a fix for a memory leak by introducing __del__ destructors to database backend classes, ensuring that connections are properly released before garbage collection occurs. Developed comprehensive unit tests to verify that memory is freed when connections are closed and that no lingering references prevent garbage collection. This work improved the stability and predictability of garbage collection in the ORM and database stack, enhancing overall reliability and test coverage for Django’s database backend infrastructure.