// TOPIC
#interviews
2 articles
◆Beginner
01What Is System Design?
Start here. What system design actually means, why it matters, the framework that turns a vague problem into a defensible architecture, and how to read every other article in this course.
#fundamentals#interviews
13 min◆Beginner
02Back-of-the-Envelope Estimation
Capacity math you can do in your head — QPS, storage, bandwidth, memory — the latency numbers every engineer should know, and worked examples for Twitter, URL shorteners, and a chat system.
#fundamentals#capacity-planning#interviews
14 min