A routine TLS 1.3 upgrade silently broke Route 53 health checks.

InfoQ@techhub.social · 2026-10-05 05:15

The result? A CDN stopped routing traffic to a healthy region - while internal dashboards showed everything was fine.

In this #InfoQ article, Alexey Golev explores why HA ≠ resilience, how control-plane dependencies create invisible failure modes, and why recovery capability erodes without clear ownership.

Read now: https://www.infoq.com/articles/high-availability-not-resilience-cloud/

#CloudComputing #SRE #Resilience

High Availability Is Not Resilience: Why Cloud Systems Fail When It Matters Most

A routine TLS 1.3 upgrade silently broke Route 53 health checks, causing a CDN to stop routing traffic to a healthy region while internal dashboards showed nothing wrong. This article examines why HA and resilience are different problems, how control-plane dependencies create invisible failure modes, and why recovery capability erodes without explicit ownership.

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