Microservices - CI/CD for Microservices
Why is it important to keep the old environment intact for some time after switching traffic in blue-green deployment?
Why is it important to keep the old environment intact for some time after switching traffic in blue-green deployment?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand rollback importance
Keeping old environment allows quick switch back if new version has problems.Step 2: Eliminate incorrect reasons
Running both indefinitely increases cost; preventing user access or schema changes on old environment are unrelated.Final Answer:
To allow quick rollback if issues are detected -> Option AQuick Check:
Old environment retention = rollback safety [OK]
Quick Trick: Keep old environment for quick rollback [OK]
Common Mistakes:
- Running both environments to save cost
- Blocking user access intentionally
- Doing schema changes only on old environment
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