Worked on stabilizing the TendbHA proxy within the TencentBlueKing/blueking-dbm repository by rolling back the proxy rescue mode deployment to a previously stable baseline. This involved restoring proxy whitelists and proxy instance management, which helped maintain production reliability and minimize the risk associated with new rollouts. The rollback process was carefully documented in the commit history to ensure clear traceability for future reference. Utilized Go and Python to address backend development and database management challenges, focusing on operational safety and system stability. The work demonstrated a methodical approach to incident response and production maintenance in a complex backend environment.