Guides
4 in-depth guides for system design learning and interview preparation.
These guides focus on the interview process around system design: how to clarify requirements, draw architecture diagrams, explain tradeoffs, and avoid common communication mistakes. Use them together with the concept library and problem solutions when preparing for senior backend, cloud, and distributed-systems interviews.
Start with the answer framework, then practice diagramming and review the question list. Each guide links into deeper pages so crawlers and readers can move from preparation advice into concrete design examples.
How to Answer a System Design Interview
A 7-step framework for answering any system design question. Includes time management, communication tips, and how to structure your answer.
How to Draw System Design Diagrams
Practical notation conventions for drawing clear diagrams live in interviews. Covers arrows, labels, components, and how to iterate under pressure.
10 Mistakes That Cost You the Offer
The most common system design interview mistakes from strong engineers — and exactly how to fix each one before your next interview.
Top 30 Interview Questions & Answers
The 30 most commonly asked system design interview questions at FAANG companies, with structured answers and links to full solutions.