Docker - Production Patterns
Why is it important to keep the blue environment intact for some time after switching traffic to green in blue-green deployment?
Why is it important to keep the blue environment intact for some time after switching traffic to green in blue-green deployment?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand rollback strategy in blue-green deployment
Keeping blue intact allows quick rollback if green fails.Step 2: Differentiate from other options
Keeping blue is not for saving space, load balancing, or testing new features.Final Answer:
To quickly rollback if the green environment has issues -> Option DQuick Check:
Blue kept for rollback safety [OK]
Quick Trick: Keep blue for quick rollback after switch [OK]
Common Mistakes:
- Thinking blue is kept to save disk space
- Confusing blue environment with load balancer
- Assuming blue is for testing new features
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