Kubernetes v1.36: Tiered Memory Protection with Memory QoS

Kubernetes v1.36 introduces tiered memory protection with Memory QoS, allowing for better guidance on container memory. This update separates throttling from reservation, enabling opt-in memory reservation and tiered protection by QoS class. The feature is now more granular, with Guaranteed Pods getting hard protection, Burstable Pods getting soft protection, and BestEffort Pods remaining fully reclaimable. This change aims to reduce the risk of OOM kills and improve system performance. Engineers should review and update their Kubernetes configurations to take advantage of this feature.