Worked on the apache/tomcat repository to address a critical logging inconsistency in the Http2UpgradeHandler during HTTP/2 upgrade flows. Focused on backend development using Java, the solution involved centralizing the logging logic by introducing a static UserDataHelper, ensuring consistent info and debug level outputs across upgrade events. This change reduced log noise and improved the clarity of operational logs, making it easier to triage issues and maintain the upgrade pathway. The work aligned with bug fix #830 and was captured in a dedicated commit, enhancing the reliability and maintainability of logging within the Java-based backend infrastructure.