Demystifying Load Balancing in Istio
summary
Explains concrete Istio configs and a live demo: config uses Envoy APIs via Istio to show random, round robin, and least request simple LB plus consistent hashing by header/cookie/source IP; locality weights (example 70/20/10) and explicit failover priorities between regions. Demo runs across three clusters (us-central1, us-west1-1, us-west1-2) with two‑tier ingress gateways, service entries and destination rules; initial cross‑cluster calls fail until an east-west gateway (TSB used to automate) is added, after which routing and LB behave as configured.
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chapters (7)
- 0:00Load balancing in Istio
- 4:31Out-of-the-box load balancing algorithms
- 7:07Consistent hashing
- 8:54Locality load balancing
- 11:25Multi-cluster setup
- 13:15Multi-cluster routing demo
- 21:51Summary
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