You manage a critical microservices system using blue-green deployment. After switching traffic to green, you discover a severe bug. What is the best immediate action to minimize downtime?

hard📝 Trade-off Q15 of 15

Microservices - CI/CD for Microservices

ASwitch traffic back to blue environment immediately

BFix the bug in green environment and keep traffic there

CRestart both environments simultaneously

DDeploy a new environment and switch traffic there

Step-by-Step Solution

Solution:

Step 1: Understand rollback in blue-green deployment
Blue-green allows quick rollback by switching traffic back to the previous stable environment (blue).
Step 2: Evaluate options for minimizing downtime
Fixing bug in green delays recovery; restarting both causes downtime; deploying new environment takes time.
Final Answer:
Switch traffic back to blue environment immediately -> Option A
Quick Check:
Rollback by switching traffic = minimize downtime [OK]

Quick Trick: Rollback by switching traffic to old env fast [OK]

Common Mistakes:

Trying to fix bug before rollback
Restarting both environments causing downtime
Deploying new env wastes time

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More Microservices Quizzes

You manage a critical microservices system using blue-green deployment. After switching traffic to green, you discover a severe bug. What is the best immediate action to minimize downtime?

Step 1: Understand rollback in blue-green deployment

Step 2: Evaluate options for minimizing downtime

Final Answer:

Quick Check:

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