Can you describe a time when you had to design a backend system to handle a significant scale or load? What architecture did you decide on, and why?

## What to Cover - Describe the problem, scale, and requirements. - Talk about design decisions: microservices, load balancing, caching strategies, etc. - Explain the trade-offs considered, such as consistency vs availability. ## Strong Answer Framework - Use STAR method: Situation, Task, Action, Result. ## Watch Out For - Overcomplicating the design without necessity, or not justifying design choices clearly.