How can a service mesh facilitate canary or A/B testing?
Tests mesh-level traffic control decoupled from app releases. Strong answers name traffic shifting, request routing, ingress gateways, and telemetry-driven rollback. Red flag: citing mTLS alone and omitting observability automation.
Tests whether you see the mesh as infra-level traffic control, not just security. A strong answer covers four things: Traffic Shifting and Request Routing for percentage or header splits; Ingress and Secure Gateways for external entry; Telemetry API, Metrics, and Distributed Tracing to automate rollback from latency or error spikes; and the distinction between canary percentage rollouts and A/B attribute routing. Red flag: citing mTLS only, proposing app feature flags over mesh primitives, or omitting observability.
Read the original → istio.io
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