System Design
Learn how to design systems and prepare for system design interviews
...It organizes core networking and distributed-systems concepts into a structured path, so you can build intuition before jumping into “design X” exercises. It covers the building blocks that show up in real architectures, such as DNS, load balancing, caching, CDNs, proxies, scalability and availability tradeoffs, and storage patterns, then connects those pieces to larger system goals. The materials are geared toward clarity and repeatability, making it useful both for self-study and for quick review before interviews. It emphasizes the why behind design decisions, not just a list of components, so you can explain tradeoffs under constraints like cost, latency, reliability, and growth. ...