Game Day
A planned exercise where teams simulate production failures to test incident response procedures and system resilience. Like a fire drill for your infrastructure.
What is Game Day?
A planned exercise where teams simulate production failures to test incident response procedures and system resilience. Like a fire drill for your infrastructure.
Game Day is a advanced concept that sits in the Reliability & Resilience area of system design. Engineers reach for it whenever they need to reason about real-world trade-offs in that space — not just for textbook correctness, but because real production systems at companies like Netflix, Amazon, and Google make these decisions every day.
If you want to go deeper than this definition — with diagrams, code, and a quiz to lock it in — work through the "Game Day" lesson linked below. It walks through the why, the mechanism, the trade-offs, and how the giants actually use it in production.
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Full interactive lesson with diagrams, code examples, real-world references, and a quiz.
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Lessons that touch on Game Day as part of a larger topic.
See also
Related glossary terms you might want to look up next.
Chaos Engineering
Deliberately injecting failures into a system to test its resilience. Netflix's Chaos Monkey randomly kills servers to ensure the system survives.
Incident Response
The structured process for detecting, containing, eradicating, and recovering from security incidents. Includes communication plans, runbooks, and post-incident reviews.
Postmortem
A blameless analysis conducted after an incident to document what happened, why, and how to prevent it from recurring. The most important output is the list of action items.