October 2025 performance summary for Apache Phoenix (apache/phoenix). The work focused on increasing testability and external accessibility of core client components to accelerate QA and integration testing. Key changes included exposing internal core client connection handling and high availability (HA) components by adjusting visibility, enabling external tooling to interact with internal APIs. This aligns with the goal of PHOENIX-7711 to make testing artifacts available to applications by releasing a Phoenix test jar. The effort delivers measurable business value by reducing test fragility, speeding issue diagnosis, and improving overall reliability of the client-core stack, with a strong foundation for future testing and integration improvements.