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Which principle should primarily guide the definition of microservice boundaries to ensure clear ownership?

easy📝 Conceptual Q3 of 15
Microservices - Migration from Monolith
Which principle should primarily guide the definition of microservice boundaries to ensure clear ownership?
AGrouping all database tables into a single service
BAligning boundaries with distinct business capabilities
CCombining unrelated functionalities to reduce the number of services
DDefining boundaries based on the size of the development team
Step-by-Step Solution
Solution:
  1. Step 1: Understand business capabilities

    Microservices should be designed around distinct business capabilities to ensure clear ownership and autonomy.
  2. Step 2: Avoid technical or team size constraints

    Boundaries should not be defined by technical artifacts like database grouping or team size, as these can lead to tight coupling or unclear responsibilities.
  3. Final Answer:

    Aligning boundaries with distinct business capabilities -> Option B
  4. Quick Check:

    Business capability alignment ensures clear service ownership [OK]
Quick Trick: Define boundaries by business capabilities, not technical details [OK]
Common Mistakes:
  • Grouping services by database schema rather than business function
  • Combining unrelated features to minimize service count
  • Using team size as the main factor for boundaries

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