Hi @RussellLuo After the Timing wheel stopped, the buckets and priority queue aren't clear. It will cause the memory leaking issue if there are a lot of unexecuted jobs. <img width="721" alt="image" src="https://github.com/RussellLuo/timingwheel/assets/16393920/a642805b-e853-47ab-9626-8aede192fb74">