Hello, thank you for your positive evaluation of the course. Regarding Prometheus high availability limitations, Thanos is commonly the accessible solution. To get straight to the point, we currently have no plans to cover Thanos separately. The reason is that as times have changed, solutions like Grafana's Mimir or utilizing Prometheus's agent mode have become mainstream over Thanos. Therefore, for Prometheus high availability, we are considering and suggesting approaches using Grafana's Mimir or Prometheus's agent mode rather than Thanos. If we can cover this as supplementary content in the future, we will try to include that material as well. ====== Content added on 2025-09-25 ====== However, Thanos still has significance in that it provides a concise approach to implementing Prometheus high availability. Its advantages include being easy to start with as a single tool, naturally supporting long-term storage using object storage, global query functionality, and maintaining a stable ecosystem. On the flip side, its disadvantages include relatively complex component configuration, increased resource costs during operation, and recently, relatively slower development pace compared to Mimir or Prometheus's agent mode.