Akhil Velagapudi focused on backend reliability improvements for the rivet-gg/rivet repository, addressing a critical bug in the PostgreSQL Pub/Sub system. Using Rust and leveraging asynchronous programming and database management skills, Akhil restructured the subscriber cleanup process to assign each subscriber its own cancellation token and dedicated cleanup task. This approach prevented cross-subscriber interference and ensured that resources were released only when no subscribers remained. By implementing a DropGuard-like pattern, Akhil eliminated shared cleanup state, reducing unintended retries and duplicate executions. The work did not introduce new features but materially improved the stability and correctness of production Pub/Sub workflows.