AdvancedTechnical
5 min
Service Discovery Strategies
Service DiscoveryMicroservicesNetworking
Advertisement
Interview Question
Explain different approaches to service discovery in microservices and their trade-offs.
Key Points to Cover
- Client-side discovery vs server-side discovery
- DNS-based discovery (Consul, Eureka, Kubernetes DNS)
- Service meshes for advanced routing
- Trade-offs in latency, complexity, and resilience
Evaluation Rubric
Explains multiple discovery approaches30% weight
Discusses trade-offs of each30% weight
Mentions real-world tools20% weight
Applies context to choose approach20% weight
Hints
- 💡Think client vs server responsibility.
Common Pitfalls to Avoid
- ⚠️Not considering the impact of stale service information due to DNS TTLs or slow registry updates.
- ⚠️Overlooking the operational complexity introduced by custom client-side discovery logic or the overhead of a full service mesh.
- ⚠️Failing to implement proper health checks for service instances, leading to requests being sent to unhealthy endpoints.
- ⚠️Designing for a single point of failure in the service registry or load balancer without adequate redundancy.
- ⚠️Coupling the application code too tightly with a specific service discovery implementation, making future changes difficult.
Potential Follow-up Questions
- ❓Which works best with containers?
- ❓What about multi-region setups?
Advertisement