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1.
What is a microservice and how does it differ from a monolithic architecture?
Answer:
Microservices Fundamentals
- 2.
Can you describe the principles behind the microservices architecture?
Answer: - 3.
What are the main benefits of using microservices?
Answer: - 4.
What are some of the challenges you might face when designing a microservices architecture?
Answer: - 5.
How do microservices communicate with each other?
Answer: - 6.
What is Domain-Driven Design (DDD) and how is it related to microservices?
Answer: - 7.
How would you decompose a monolithic application into microservices?
Answer: - 8.
What strategies can be employed to manage transactions across multiple microservices?
Answer: - 9.
Explain the concept of ‘Bounded Context’ in the microservices architecture.
Answer: - 10.
How do you handle failure in a microservice?
Answer:
Design Patterns and Best Practices
- 11.
What design patterns are commonly used in microservices architectures?
Answer: - 12.
Can you describe the API Gateway pattern and its benefits?
Answer: - 13.
Explain the ‘Circuit Breaker’ pattern. Why is it important in a microservices ecosystem?
Answer: - 14.
What is a ‘Service Mesh’? How does it aid in managing microservices?
Answer: - 15.
How do you ensure data consistency across microservices?
Answer: - 16.
Discuss the strategies you would use for testing microservices.
Answer: - 17.
How can you prevent configuration drift in a microservices environment?
Answer: - 18.
When should you use synchronous vs. asynchronous communication in microservices?
Answer: - 19.
What role does containerization play in microservices?
Answer:
Deployment and Operations
- 20.
What are the challenges of deploying microservices?
Answer: - 21.
Describe blue-green deployment and how it applies to microservices.
Answer: - 22.
How does canary releasing work, and how is it beneficial for microservices deployments?
Answer: - 23.
Explain the concept of ‘Infrastructure as Code’ and how it benefits microservices management.
Answer: - 24.
Describe what Continuous Integration/Continuous Deployment (CI/CD) pipelines look like for microservices.
Answer: - 25.
How do you monitor health and performance of microservices?
Answer:
Microservices and Data Management
- 26.
How do you handle database schema changes in a microservice architecture?
Answer: - 27.
Discuss the pros and cons of using a shared database vs. a database-per-service.
Answer: - 28.
Explain the concept of ‘Event Sourcing’ in the context of microservices.
Answer: - 29.
What is Command Query Responsibility Segregation (CQRS) and how can it be applied to microservices?
Answer: - 30.
Can you discuss strategies for dealing with data consistency without using distributed transactions?
Answer:
Security
- 31.
How do you implement authentication and authorization in microservices?
Answer: - 32.
What are some common security concerns when handling inter-service communication?
Answer: - 33.
Describe how you would use OAuth2 or JWT in a microservices architecture.
Answer: - 34.
What mechanisms would you implement to prevent or detect security breaches at the microservices level?
Answer: - 35.
How do you ensure that sensitive data is protected when using microservices?
Answer:
Scalability and Performance
- 36.
How do you ensure that a microservice is scalable?
Answer: - 37.
What metrics would you monitor to assess a microservice’s performance?
Answer: - 38.
Discuss strategies to handle high-load or peak traffic in a microservices architecture.
Answer: - 39.
How do Microservices handle load balancing?
Answer: - 40.
In terms of performance, what would influence your decision to use a message broker vs direct service-to-service communication?
Answer:
Inter-Process Communication
- 41.
What are the advantages and drawbacks of using REST over gRPC in microservice communication?
Answer: - 42.
How would you implement versioning in microservices API?
Answer: - 43.
What are the challenges of network latency in microservices and how can they be mitigated?
Answer: - 44.
Explain the difference between message queues and event buses. In which scenarios would you use each?
Answer: - 45.
How can transactional outbox patterns be used in microservices?
Answer:
Resiliency and Reliability
- 46.
How would you design a microservice to be fault-tolerant?
Answer: - 47.
Discuss the importance of timeouts and retry logic in a microservices architecture.
Answer: - 48.
What strategies can be used to achieve high availability in microservices?
Answer: - 49.
How do you approach disaster recovery in a microservices-based system?
Answer: - 50.
Explain how you would handle a cascading failure in a microservice ecosystem.
Answer:
Observability and Monitoring
- 51.
What tools or practices would you recommend for logging in a distributed microservices system?
Answer: - 52.
How do you trace requests across boundaries of different microservices?
Answer: - 53.
Discuss the importance of metrics and alerts in maintaining a microservices architecture.
Answer: - 54.
How do you handle performance bottlenecks in microservices?
Answer: - 55.
What is distributed tracing and which tools help you accomplish it in a microservices setup?
Answer:
Containers and Orchestration
- 56.
Explain the role of Docker in developing and deploying microservices.
Answer: - 57.
How do container orchestration tools like Kubernetes help with microservice deployment?
Answer: - 58.
Describe the lifecycle of a container within a microservices architecture.
Answer: - 59.
How do you ensure that containers are secure and up-to-date?
Answer: - 60.
What are the best practices for container networking in the context of microservices?
Answer:
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