During January 2026, Chen Jiangbo developed a bulk key deletion feature for the Shopify/dalli repository, enhancing the Dalli client’s ability to handle large-scale cache invalidations efficiently. He implemented pipelined requests for the delete_multi method, reducing per-key overhead and improving throughput. His work included comprehensive tests to verify delete_multi behavior and addressed compatibility with connection_pool 3.0, minimizing upgrade risks for users. Chen also refined the handling of delete options in quiet mode, ensuring safer and clearer operations. This project demonstrated depth in backend development and API design, leveraging Ruby and Ruby on Rails to improve reliability for Memcached deployments.