https://ewry.net/devops-sre-interview-questions/docs/devops-interview-questions/Recent content in DevOps interview questions on DevOps & SRE interview questionsHugoen-ushttps://ewry.net/devops-sre-interview-questions/devops-middle-senior-interview-questions/Mon, 01 Jan 0001 00:00:00 +0000https://ewry.net/devops-sre-interview-questions/devops-middle-senior-interview-questions/<h1 id="devops-middle-senior-interview-questions">DevOps middle+, senior interview questions<a class="anchor" href="#devops-middle-senior-interview-questions">#</a></h1> <h3 id="1-design--architecture--strategy">1. Design / Architecture / Strategy<a class="anchor" href="#1-design--architecture--strategy">#</a></h3> <h4 id="1-how-would-you-design-a-scalable-fault-tolerant-multi-region-architecture-for-a-microservices-application-so-as-to-minimize-latency-and-downtime">1. How would you design a scalable, fault-tolerant, multi-region architecture for a microservices application so as to minimize latency and downtime?<a class="anchor" href="#1-how-would-you-design-a-scalable-fault-tolerant-multi-region-architecture-for-a-microservices-application-so-as-to-minimize-latency-and-downtime">#</a></h4> <p><strong>Goal</strong>: Deploy microservices across multiple regions (e.g., AWS us-east-1, eu-west-1) for global low-latency access (&lt;100ms), auto-scaling to handle traffic spikes, and 99.99% uptime via redundancy.</p> <p><strong>1. Infrastructure Layer (Scalability &amp; Fault Tolerance)</strong></p> <ul> <li>Use managed Kubernetes (EKS/GKE) clusters per region, with auto-scaling node groups (e.g., scale from 3-50 nodes based on CPU &gt;70%).</li> <li>Deploy via IaC (Terraform) for consistent, reproducible setups.</li> <li><strong>Example</strong>: Horizontal Pod Autoscaler (HPA) in K8s scales pods from 5-100 replicas during peak loads.</li> </ul> <p><strong>2. Networking Layer (Minimize Latency)</strong></p>