#5 – Traffic Not Reaching Service? Debug Like a Senior Engineer | Microservices Interview Question скачать в хорошем качестве

#5 – Traffic Not Reaching Service? Debug Like a Senior Engineer | Microservices Interview Question

Microservices Interview Questions for Senior Developers – Question 5 Scenario: A microservice is deployed successfully, but traffic doesn’t reach it. This is a classic production issue — and it tests real-world debugging skills. In this video, we break down a systematic, layer-by-layer approach to debugging traffic issues in microservices environments. You’ll learn how to investigate: ✔ Service health and readiness ✔ Service discovery registration ✔ Load balancer routing rules ✔ Health check configuration ✔ Network and security rules ✔ Client misconfiguration issues ✔ Port mismatches (very common!) ✔ Running vs Reachable distinction This question isn’t about code. It’s about production thinking. If you're preparing for senior backend or system design interviews, this mindset is critical. 🔎 Topics Covered: Kubernetes debugging basics Health checks and readiness probes Service discovery pitfalls Load balancer routing issues Network policies & firewalls Production debugging strategy 🚀 These questions test: Observability Resilience Failure handling Real-world system design maturity 00:00 – Hook: Service Is Running… But No Traffic?! 00:40 – Why This Is a Senior-Level Production Question 01:20 – The 6-Layer Debugging Framework 02:10 – Step 1: Is the Service Actually Running? 03:10 – Step 2: Health Checks vs Running (Critical Difference) 04:20 – Step 3: Service Discovery Problems 05:30 – Step 4: Load Balancer & Routing Issues 06:40 – Step 5: Network / Security Blocks 07:40 – Step 6: Client Misconfiguration 08:40 – The Port Mismatch Trap (Very Common) 09:30 – Structured Debugging Checklist (Outside → Inside) 10:20 – Prevention: How Senior Engineers Avoid This 10:50 – Final Production Mindset Takeaway microservices interview questions senior developer interview microservices debugging kubernetes troubleshooting service not reachable production issues debugging system design interview backend interview questions devops interview questions load balancer issues health check configuration service discovery problems kubernetes service routing software architecture interview #microservices #systemdesign #backendengineering #devops #kubernetes #softwareengineering #techinterview