Worked on enhancing the reliability of the graphprotocol/graph-node repository by addressing a critical issue in the Foreign Data Wrapper (FDW) mirroring workflow. Focused on backend development and database management using Rust and PostgreSQL, the developer implemented transaction-scoped timeouts to prevent FDW zombie connections from causing system-wide locks during table mirroring operations. This solution introduced local statement and lock timeouts, ensuring that stuck queries no longer escalated into ACCESS EXCLUSIVE locks, particularly mitigating a regression in version 0.42.0. The changes reduced lock contention and downtime risk, improving the stability and reliability of mirror_primary_tables and refresh_tables processes.