Microservices Transaction

Basics of Transactions in Microservices

1. What is a microservices transaction, and how does it differ from transactions in monolithic systems?
2. Why is managing transactions in a microservices architecture more complex than in a monolithic system?
3. Explain the concept of distributed transactions in microservices.
4. What are the challenges associated with distributed transactions?
5. How do you handle transaction boundaries in microservices?

Patterns and Strategies

6. What is the SAGA pattern, and how does it help in managing transactions across microservices?
7. Describe the process of implementing a SAGA pattern using compensating transactions.
8. How does the Choreography approach differ from the Orchestration approach in the SAGA pattern?
9. Explain the concept of eventual consistency and its role in microservices transactions.
10. What are the benefits and drawbacks of using the SAGA pattern compared to distributed transactions?

Transaction Management Techniques

11. How do you implement distributed transactions using two-phase commit (2PC) in microservices?
12. What are the limitations of using two-phase commit (2PC) in a microservices environment?
13. How do you ensure atomicity and consistency across microservices without using two-phase commit (2PC)?
14. What is the role of message queues or event streams in managing transactions across microservices?
15. How do you use distributed logs to maintain transaction consistency in microservices?

Data Consistency and Integrity

16. How do you handle data consistency issues in a microservices architecture?
17. What strategies do you use to ensure data integrity across multiple microservices?
18. Describe how you implement idempotency to ensure reliable transactions in microservices.
19. How do you handle retries and error handling in a microservices transaction?
20. What are the trade-offs between consistency and availability in a microservices architecture?

Implementing Transactions

21. How do you implement a retry mechanism for failed transactions in microservices?
22. What are some common practices for designing transactional microservices to handle failures gracefully?
23. How do you use distributed tracing to track transactions across microservices?
24. What is the role of correlation IDs in managing transactions across microservices?
25. How do you test transactional behavior in a microservices architecture?

Advanced Topics

26. How do you handle long-running transactions in a microservices environment?
27. What are some techniques for implementing compensation logic in the SAGA pattern?
28. How do you manage state transitions in a distributed transaction using event sourcing?
29. Describe how you would use a distributed transaction coordinator in a microservices setup.
30. How do you balance between transactional consistency and system performance in microservices?

Tools and Technologies

31. What tools or frameworks can help manage transactions in a microservices architecture?
32. How do you use Spring Boot and Spring Cloud for managing transactions across microservices?
33. What role do message brokers (e.g., Kafka, RabbitMQ) play in transaction management?
34. How does the use of a service mesh (e.g., Istio) impact transaction management in microservices?
35. What are some best practices for integrating transaction management solutions with CI/CD pipelines?

Security and Compliance

36. How do you ensure transactional security and integrity in a microservices environment?
37. What are the implications of managing sensitive data within distributed transactions?
38. How do you address compliance requirements related to transactions in a microservices architecture?
39. What strategies do you use for secure communication between services involved in a transaction?
40. How do you handle data privacy and encryption in transactional microservices?

Performance and Optimization

41. How do you optimize the performance of distributed transactions in microservices?
42. What are the potential performance issues related to using the SAGA pattern, and how can they be mitigated?
43. How do you monitor and analyze the performance of transactions across microservices?
44. What techniques do you use to reduce latency in transactional microservices?
45. How do you handle transaction logs and data storage for performance optimization?

Real-World Scenarios

46. Can you provide an example of a transaction management strategy you implemented in a real-world microservices application?
47. How did you address specific challenges related to distributed transactions in your previous projects?
48. Describe a situation where a failure in a microservices transaction had significant consequences and how you resolved it.
49. How do you approach designing a new microservices system with complex transaction requirements?
50. What are some lessons learned from handling transactions in a large-scale microservices architecture?