lusion</h2><p>Practical experience at Google showed that the model of a slim sidecar proxy and a large shared caching control plane intermediary hits a sweet spot, delivering excellent perceived availability and latency. We’ve taken the lessons learned there and applied them to create more sophisticated and effective caching, prefetching, and buffering strategies in Istio. We’ve also optimized the communication protocols to reduce overhead when a cache miss does occur.</p><p>Mixer is still young. As of 