During January 2026, Frelam contributed to the jeejeelee/vllm repository by addressing a critical stability issue in the encoder path. Focusing on backend development with Python and scheduling algorithms, Frelam identified and resolved a cache leak that caused encoder input requests to persist and stall CPU scheduling. The solution involved ensuring that unschedulable requests were properly removed from the cache, which improved throughput consistency and reduced the risk of request backlogs under load. The work was tracked through a documented commit and linked to a specific issue, demonstrating careful code review, targeted testing, and collaborative development practices within the project.