Worked on enhancing observability within the micrometer-metrics/micrometer repository by implementing a feature that enables LoggingMeterRegistry to log delta_count alongside throughput for counters, timers, and summaries. This addition improves the accuracy and clarity of metric reporting, supporting better performance monitoring and capacity planning. The approach involved refactoring the logging output for consistency and readability across different meter types, ensuring that logs are both comprehensive and easy to interpret. Comprehensive unit tests were added to validate the correct logging of delta counts and throughput across various meter configurations, utilizing Java development skills with a focus on logging, metrics, and test coverage.