Yuxuan Chen focused on backend reliability improvements in the grafana/loki and fluent/fluent-operator repositories, addressing critical issues in log ingestion pipelines. In grafana/loki, Yuxuan enhanced the Fluent Bit integration by refining error reporting for the out-grafana-loki plugin, enabling clearer diagnostics for configuration issues and reducing silent failures. For fluent/fluent-operator, Yuxuan implemented Kubernetes CRD validations using Go and YAML, preventing null logfmt values in parser configurations and thereby reducing crash risk. This work demonstrated a strong grasp of CRD development and configuration management, resulting in more resilient log processing and improved operational stability for Kubernetes-native environments.