Production Systems Engineering
Blue-Green Deployments
Run two identical environments, blue (current) and green (new). Switch traffic all at once, and switch back instantly if something breaks. Fast rollback, at the cost of double infrastructure.
The Concept Explained
Coming soon.
How It Works
Coming soon.
Production Implications
Coming soon.
Tradeoffs and Decision Framework
Coming soon.
Common Mistakes
Coming soon.
INTERVIEW QUESTION
Explain blue-green deployment. What's the main advantage over rolling deployments, what does it cost, and how do you handle database schema changes during the cutover?
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