May 2026 monthly performance summary for linkedin/ambry: - Delivered the Partition Replication Priority Admin API with server-side priority tracking, auto-pruning, and comprehensive tests. Introduced per-partition replication priority control to bias fetch budgets toward selected partitions, enhancing hot-partition throughput and data availability. - Implemented wire protocol extensions and admin REST endpoints, with integral dispatch across ReplicaThreads and safe-guarded input validation. - Significant hardening and maintainability work: defensive caps on priority boost and partition lists, explicit action enum, and improved error handling and observability; aligned with design specs (PR #3261) and related work. - Extensive test coverage validating correctness, performance, and failure scenarios; improved determinism in results and improved gating behavior for admin APIs. - Co-authored work with Claude Opus; demonstrated collaboration across design, server, and test layers; delivered a robust admin API ready for production rollout. Business value and impact: - Provides operational control to bias replication toward high-value partitions, improving read/write throughput for hot data and stabilizing cross-dc replication. - Predictable resource usage per cycle via weighted fetch budgeting, reducing risk of OOM and improving overall cluster reliability. - Enhanced safety with input validation and explicit actions, enabling safer feature rollout across fabrics. - Strengthened observability and maintainability, easing future enhancements and audits.