Explore the scalability challenges and solutions for Cilium Cluster Mesh in this insightful conference talk. Dive into a six-month project condensed into a concise presentation, examining how Cluster Mesh synchronizes information between clusters and why it faltered during a large-scale test involving 50,000 nodes across 255 clusters. Learn about the innovative use of kubemark in architecting the scale test to maintain cost-effectiveness. Discover how the new 1.14 beta feature, KVStoreMesh, addresses Cluster Mesh's scaling limitations, offering improved stability and expanded capabilities for connecting workloads across clusters.