Save & Share for future interviews🤝🏻 Comment “load” & I’ll share you a detail write-up of how to explain this in an interview 🙌🏻 Your load balancer is returning 503 for 20% of requests — what’s your immediate step? 1. Check LB target health — see if some instances/pods are marked unhealthy. 2. Verify recent deploy/config changes — rollback if errors started right after rollout. 3. Check backend metrics — CPU, memory, thread pool saturation, connection limits. 4. Remove/replace unhealthy instances from LB and scale out the service temporarily. 5. Throttle excessive traffic at edge (rate limiting) and increase cache usage to reduce load. 6. Check logs & health-check endpoints to confirm why LB thinks backends are unhealthy. 7. Monitor 503 rate after mitigation and then work on RCA (health check misconfig, overload, bug) { data structures, algorithms, coding, tech, interviews, tech interviews, data structures and algorithms, google, Microsoft, Amazon, uber, software engineer...