How do you structure a progressive rollout with automated guardrails?

hard

Answer

$(1) Deploy to 1% traffic.$
$(2) Monitor N minutes: error rate, latency p50/p99, business KPI, model-specific metrics (calibration).$
$(3) If any guardrail exceeded \to auto-rollback + page.$
$(4) Otherwise auto-advance to next stage (5% \to 25% \to 50% \to 100%).$
$(5) Each stage has minimum bake time.$
$Tools: Flagger, Argo Rollouts, LaunchDarkly.$
$Metrics + thresholds pre-configured before rollout.$
$No human intervention if all green.$

Check yourself — multiple choice

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1%→5%→25%→50%→100% with per-stage bake time; auto-monitor error/latency/KPI/calibration; guardrail breach → auto-rollback + page; tools Flagger / Argo Rollouts / LaunchDarkly
Just deploy
Not real

Progressive rollout: stages + bake time + guardrails + auto-rollback.

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