Cilium's ipcache scalability issue: Understanding...

Introduction: The Cilium ipcache Scalability Challenge Cilium’s ipcache, a critical component for enforcing identity-based network policies in Kubernetes, faces scalability limitations as clusters approach and exceed 1 million pods. Analogous to a centralized registry tracking unique resident IDs in a metropolis, the ipcache maps pod IP addresses to security identities, enabling fine-grained policy enforcement. However, its scalability bottleneck arises from the distribution of unique identities