During March 2026, Georgios Kokologiannakis ported a QoS-based connection pool prioritization feature to the HubSpot/vitess repository, updating it from Vitess version 14 to 22. He replaced the existing simple list with a priority queue to manage connection requests, improving throughput, fairness, and latency under contention. Working in Go, he focused on concurrent programming and database management to align the new implementation with Vitess v22’s pool architecture while preserving upstream compatibility. Georgios documented the changes and deployment considerations, ensuring smooth integration and supporting future backport decisions. His work addressed resource management and responsiveness for mission-critical database workloads.