Worked on enhancing the Solomon Metrics Library within the ytsaurus/ytsaurus repository by introducing a public constructor for the Counter struct, allowing explicit naming, initial values, and flexible configuration through options such as metric type, tags, and timestamps. Leveraged Go for backend development, focusing on improving instrumentation flexibility and observability across services. Added a rated option in MetricsOpts to support various metric types, including counters, gauges, and histograms, enabling more accurate and adaptable metric tracking. These updates streamlined the process of metric instantiation, reduced boilerplate code, and promoted consistency in how metrics are defined and managed within the codebase.