Worked on enhancing the reliability of the cache layer in the huggingface/xet-core repository, focusing on backend development using Rust. Addressed a critical issue where disk cache failures during cache.put operations could disrupt data retrieval, implementing error handling that logs failures at the info level and allows the system to continue serving user requests. This approach ensured that user-facing reads remained available even when the disk cache encountered problems, improving the resilience of cached data paths. The work emphasized robust caching strategies and observability, contributing to a more stable backend infrastructure without introducing new features during the development period.