Worked on moltbot/moltbot to deliver a performance optimization for the session list resolver, focusing on backend development and performance tuning using TypeScript. Implemented a caching mechanism that memoizes deterministic per-row resolver work within a single sessions.list call, targeting scenarios where many sessions share a small set of provider or model tuples. This approach increased throughput and reduced CPU usage during high-volume session listings by preventing redundant computations. The solution was validated through focused unit and performance testing, with continuous integration checks confirming reliability. Emphasized correctness by scoping the cache per request, ensuring no cross-request data leakage or unintended side effects.