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In microservices architecture, what is the key benefit of having a rollback mechanism during deployments?

easy📝 Conceptual Q1 of 15
Microservices - CI/CD for Microservices
In microservices architecture, what is the key benefit of having a rollback mechanism during deployments?
ATo increase the deployment time for better testing
BTo permanently disable the previous version of the service
CTo quickly revert to a stable state if the new release causes issues
DTo automatically scale the service based on traffic
Step-by-Step Solution
Solution:
  1. Step 1: Understand rollback purpose

    Rollback mechanisms allow reverting to a previous stable version when a deployment causes failures.
  2. Step 2: Analyze options

    To quickly revert to a stable state if the new release causes issues correctly states the benefit; others describe unrelated or incorrect outcomes.
  3. Final Answer:

    To quickly revert to a stable state if the new release causes issues -> Option C
  4. Quick Check:

    Rollback = revert on failure [OK]
Quick Trick: Rollback means revert to last stable version [OK]
Common Mistakes:
  • Confusing rollback with scaling
  • Thinking rollback disables old versions permanently
  • Assuming rollback increases deployment time

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