Reliable multi-cluster application architectures with Istio
summary
Istio plus Kubernetes implements four concrete multi‑cluster archetypes — zonal, regional, multi‑regional, and global — with tradeoffs quantified by SLA math and typical deployments (example global: six clusters across three regions, automatic failover, higher cost). Istio provides service discovery across meshes, locality load balancing and traffic management rules, cross‑cluster security and policy, and unified observability; patterns include active‑passive replicas, active‑active across zones, and region‑isolated meshes with DNS or external LB routing.
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chapters (11)
- 0:00Introduction
- 2:25Traditional vs cloud reliability
- 5:53Why multi-cluster matters
- 8:00Service archetypes for reliability
- 10:29Active-passive zones
- 13:42Active-active multi-zone
- 15:29Active-passive regions
- 17:31Isolated regions for regulation
- 18:52Global multi-region deep dive
- 21:38Combining archetypes for cost
- 23:03Key takeaways
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