Microservices Interview Cheat Sheet

1. What is a microservices architecture?

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2. How does microservices differ from monolithic architecture?

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3. What are the advantages of microservices?

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4. What are the challenges of microservices?

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5. Explain service discovery in microservices.

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6. What is API Gateway in microservices?

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7. Explain inter-service communication methods.

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8. How is data managed in microservices?

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9. What is the difference between synchronous and asynchronous microservices?

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10. What is eventual consistency?

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11. Explain circuit breaker pattern.

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12. What is the role of load balancing in microservices?

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13. How do microservices handle security?

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14. What is logging and monitoring in microservices?

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15. Explain containerization in microservices.

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16. What is the role of Kubernetes in microservices?

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17. How do microservices achieve high availability?

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18. Explain the Saga pattern.

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19. What is event-driven architecture in microservices?

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20. How do microservices scale?

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21. What is CQRS (Command Query Responsibility Segregation)?

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22. Explain Event Sourcing in microservices.

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23. How does the Saga pattern work for distributed transactions?

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24. What is observability in microservices?

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25. Explain distributed tracing.

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26. What are circuit breakers and fallback mechanisms?

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27. Explain bulkhead pattern.

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28. How does rate limiting work?

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29. Explain retries and backoff strategies.

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30. What is a sidecar pattern?

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31. How do you implement API versioning in microservices?

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32. Explain service mesh.

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33. How do microservices handle configuration management?

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34. What is blue-green deployment?

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35. What is canary deployment?

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36. How do you implement logging best practices in microservices?

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37. How do microservices ensure resilience?

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38. Explain health checks in microservices.

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39. Explain the importance of idempotency in microservices.

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40. How do you monitor microservices performance?

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41. What is event-driven architecture in microservices?

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42. Difference between event-driven and request-driven microservices.

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43. What are message brokers?

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44. Explain pub/sub and message queue patterns.

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45. Explain Kafka and its advantages.

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46. How do microservices ensure reliable messaging?

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47. What is the transactional outbox pattern?

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48. How do microservices achieve scalability?

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49. Explain CQRS + Event Sourcing for scaling.

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50. How does asynchronous communication improve microservices performance?

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