Worked on the lakekeeper/lakekeeper repository to enhance observability for the event listener dispatch system, focusing on end-to-end latency visibility and performance tuning. Introduced Prometheus-based metrics by implementing a histogram to measure wall-clock latency per listener across all event types, using Rust for backend development. Updated the dispatch_event! macro to time each listener and record durations for both successful and failed executions, with error logs now including elapsed time. This unified approach to instrumentation reduced maintenance overhead and enabled faster diagnostics, providing clear insight into each listener’s contribution to overall API response times within concurrent task contexts. No bugs were reported.