Lixin worked on enhancing configuration management for the D2Cluster component in the linkedin/rest.li repository, focusing on outlier detection features. Over two months, Lixin introduced a new outlier detection schema, integrated it into the D2Cluster definition, and exposed flexible configuration options to support diverse deployment needs. The work involved schema definition and backend development using Java and Pegasus, with careful attention to versioning and documentation updates. By making configuration fields optional and improving naming clarity, Lixin reduced the risk of misconfiguration and streamlined future tuning. The contributions demonstrated depth in backend systems and configuration design, though no bugs were addressed.