Worked on the apache/skywalking repository to enhance the alarm infrastructure by introducing recovery notifications and a configurable recovery observation period. Developed a feature that notifies users when alarms are resolved, aiming to reduce mean time to recovery and support proactive remediation in production environments. The implementation involved updating the alarm kernel to track and report recovery status, as well as modifying alarm callbacks to process and emit recovery messages. Leveraged Java and the Spring Framework within a microservices architecture to deliver these improvements, focusing on backend development and robust state management for more effective monitoring and alerting workflows in distributed systems.