Worked on the deepflowio/deepflow repository to deliver targeted improvements in security, performance, and reliability within a single monthly cycle. Upgraded core dependencies, including Go to version 1.26.2 and the OpenTelemetry SDK to v1.43.0, to strengthen the security posture and enhance runtime efficiency. Addressed a key reliability issue by optimizing Prometheus cache memory management, ensuring that new label and label_value entries are preserved during refresh operations for greater stability under load. Applied DevOps practices and backend development expertise, with a focus on concurrency handling and database management, to consolidate impactful changes while minimizing risk to production systems.