April 2026 — Highlights: - Retina: API Server Latency Histogram Bucket Tuning for Large Clusters implemented to restore reliable latency visibility in large deployments. Updated bucket configuration (start 0.5ms, width 1ms, count 64) to replace the 0ms bucket and extend coverage up to 63.5ms (+Inf), addressing skew in large-scale clusters. Validated with targeted tests; all latency tests pass. - DocumentDB: Documentation improvement by reordering Docker setup commands in the README Step 3 to improve clarity and usability for new users. Overall impact: Enhanced observability for large-scale deployments, reduced onboarding friction for customers, and reinforced engineering discipline with signed commits and thorough testing. Technologies/skills demonstrated: observability instrumentation and metrics design, performance validation, documentation best practices, and rigorous commit hygiene across multiple repositories.