Maxim Kirienkov enhanced observability for the GreptimeTeam/greptimedb repository by developing a middleware feature that logs HTTP server errors with client IP addresses, improving traceability across API calls. Using Rust and focusing on backend development, he refined error handling to ensure logs are generated only when client addresses are available, reducing noise and maintaining performance. The implementation included restoring detailed debug logging and expanding log entries with URI, method, and matched path information. This work enables faster incident response and better auditing for API users, laying a foundation for future metrics and supporting more reliable service delivery across the HTTP surface.