Daily DevOps Interview Questions Day #74

Daily Interview Questions for SRE and DevOps engineers

Question of the day:

You wake up Monday morning to a Slack message from your manager: “We just got featured on XYZ news article. Traffic is up 10x”

Your infrastructure:

• Frontend: React SPA on S3/CloudFront

• Backend: Node.js API on EKS (3 pods, 2 CPU/4GB each)

• Database: RDS PostgreSQL (db.t3.large, 100 max connections)

• Cache: Redis (cache.t3.medium)

You check the dashboards and see:

• Normal traffic: 1,000 requests/minute

• Current traffic: 12,000 requests/minute and rising

• Response times creeping from 200ms to 800ms

• Error rate still at 0% but climbing to 2%

The CTO asks: “What’s going to break first, and what do we do about it?”