How much data? How many reads/writes per second? B. High-Level Design (5-10 minutes) Draw a block diagram with the core components: Client (Mobile/Web) Load Balancer API Gateway/Application Servers Database/Storage Caching C. Detailed Design (15-20 minutes)
Never start drawing diagrams immediately. Spend the first 5 to 7 minutes clarifying exactly what you are building. Hacking The System Design Interview Pdf
Do not assume data is safe simply because it hits a server. Talk about Write-Ahead Logs (WAL) and replication lags. How much data
Candidates throw out trendy technologies like Kafka, Kubernetes, or Redis without justifying why they fit the specific requirements. Hacking The System Design Interview Pdf