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Pick a lab, run through mock scenarios, or review flashcards. The full system design workflow is here in one place.
80 questions across 8 categories to benchmark confidence vs. actual depth. Find your blind spots before the interview.
Build and stress-test real systems to understand tradeoffs quickly
Distribute incoming requests across multiple servers efficiently
Store frequently accessed data for faster retrieval
Asynchronous communication between services
Persistent data storage with ACID guarantees
Content delivery network for global distribution
Single entry point for all client requests
Focused tools that sharpen interview performance
Start from fundamentals and build toward staff-level reasoning
Scalability, latency, throughput, and the availability-consistency tradeoff — the vocabulary you need before anything else makes sense
CAP theorem, consistency models (weak, eventual, strong), and availability patterns like failover and replication
DNS resolution, TCP vs UDP vs QUIC, TLS handshakes, HTTP protocol evolution, CDN edge caching, and connection pooling
L4 vs L7 balancing, routing algorithms (round robin, least connections, consistent hashing), reverse proxies, and horizontal scaling