During April 2025, Liang focused on backend development and testing for the wazuh/wazuh-indexer repository, addressing a critical issue in the segment replication lag metric. He refined the Java-based logic responsible for starting replication lag timers, ensuring more accurate metric calculations and reducing the risk of false alerts. Liang’s work included updating the project’s changelog for improved traceability and adding a regression test in Java to validate the fix across varied scenarios. By enhancing the accuracy and observability of replication metrics, his contributions supported better decision-making and capacity planning, reflecting a careful, maintenance-oriented approach to metric correctness and reliability.