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Which of the following is a correct step in an incremental migration plan?

easy📝 Architecture Q12 of 15
Microservices - Migration from Monolith
Which of the following is a correct step in an incremental migration plan?
ADeploy all new microservices simultaneously without routing changes
BUse feature flags or routing to direct some traffic to new services
CStop the old system before starting migration
DSkip monitoring during migration to save resources
Step-by-Step Solution
Solution:

  1. Step 1: Identify safe deployment practices

    Using feature flags or routing allows gradual traffic shift to new services safely.

  2. Step 2: Eliminate unsafe options

    Deploying all at once, stopping old system early, or skipping monitoring are risky.

  3. Final Answer:

    Use feature flags or routing to direct some traffic to new services -> Option B

  4. Quick Check:

    Routing traffic gradually = safe migration [OK]
Quick Trick: Use routing or flags to control traffic flow [OK]
Common Mistakes:
  • Deploying everything at once
  • Stopping old system too early
  • Ignoring monitoring during migration

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