Worked on stabilizing shutdown behavior in the facebookincubator/cinderx repository, focusing on improving runtime reliability during timeout scenarios. Addressed a TypeError that occurred during shutdown by implementing a setter for the cached_classproperty, enabling mutation and allowing the HttpResponseTimeoutError status code to be overridden as needed. This targeted refactor was applied directly in the shutdown sequence, ensuring the server could handle timeouts gracefully and reducing the risk of ungraceful outages. The work involved both Python and C development, with an emphasis on system programming and testing to ensure robust, low-risk improvements to the shutdown path and overall server reliability.