Worked on the spring-projects/spring-boot repository to enhance the reliability of backend metrics management in Java applications using the Spring Framework. Focused on stabilizing metric reporting within nested application contexts, the developer addressed a bug where MeterRegistry beans in a parent context were prematurely terminated when a child context closed. By updating the MeterRegistryCloser logic, they ensured that metrics persisted correctly across context lifecycles, preventing data loss and maintaining accurate monitoring. The solution was implemented with minimal code changes, preserving API compatibility and code quality. This work contributed to more robust backend development practices and improved application observability in Spring Boot environments.