How do you design a scalable microservices architecture?
This question assesses your ability to decompose monolithic applications into independent services. It evaluates your understanding of service boundaries, communication patterns, and deployment strategies.
Why Interviewers Ask This
Interviewers ask this to determine if you can architect systems that grow with user demand without collapsing. They want to see if you understand the trade-offs between coupling and cohesion. The question tests your knowledge of containerization, orchestration tools like Kubernetes, and how to manage data consistency across distributed services. It also reveals your experience with real-world challenges such as network latency and fault tolerance in production environments.
How to Answer This Question
Key Points to Cover
- Service decomposition based on business domains
- Asynchronous communication patterns
- Database per service strategy
- Container orchestration and auto-scaling
Sample Answer
Common Mistakes to Avoid
- Ignoring data consistency challenges
- Over-engineering simple use cases
- Neglecting observability and monitoring
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