Developed and integrated a sticky round-robin model selection feature for combo requests in the decolua/9router repository, focusing on improving load distribution and efficiency under multi-model workloads. The solution introduced a configurable threshold for consecutive model use, reducing model-switching overhead and enabling more predictable performance. Leveraging JavaScript and full stack development skills, the work centered on API development and scheduling algorithms, with configuration-driven routing to facilitate easier tuning. All changes were tracked through clear commit history, supporting traceability and maintainability. No major bug fixes were reported during this period, with efforts concentrated on enhancing scalability and operational predictability for API consumers.