TechHacker Newsabout 2 hours ago
GitHub, autoscaling, and the component substitution fallacy
1 min read
GitHub's outage involved an Istio sidecar reaching concurrency limits while a misconfigured autoscaling policy watched host service metrics, not sidecar limits. The post highlights the component substitution fallacy, arguing reliability requires treating system interactions as first-class, not just fixing defective components.
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