Sample System-Design Deck
Quick demo deck — click each question to reveal the answer.
1. What problem does a load balancer solve?
Distributes requests across healthy back-end instances, smoothing spikes and hiding failures.
2. Vertical vs horizontal scaling?
• Vertical adds CPU/RAM to one node.
• Horizontal adds more nodes and spreads load.
3. Why keep services stateless?
Any healthy instance can serve any request, simplifying scaling and fail-over.