Worked on the aws/aws-advanced-jdbc-wrapper repository, focusing on enhancing observability and troubleshooting for database connections. Addressed a specific bug in the FailoverConnectionPlugin by refining the logging mechanism to clearly distinguish between user-initiated connection closures and other transaction resolution scenarios. This involved adding an explicit log message, which improved the clarity and usefulness of logs for developers diagnosing connection issues. Utilized Java and Properties files to implement these changes, applying skills in error handling and logging. The work contributed to more precise monitoring and easier debugging of connection events, though the scope was limited to a single targeted bug fix.