Worked on the datastax/pulsar repository to enhance the stability and performance of the Pulsar metadata store. Addressed a critical issue by rolling back recent changes to the threading model and configuration, restoring a previously stable baseline and reducing the risk of regressions. This approach improved operational reliability for metadata operations and ensured consistent support for downstream consumers. Utilized backend development skills with a focus on Java and microservices architecture to implement the rollback. Documented the changes thoroughly, improving traceability for audits and compliance. The work prioritized maintainability and system resilience, reflecting a careful, risk-aware engineering approach during the month.