System design practice
Build crisp mental models for design interviews.
Study reusable concepts and system templates, then practice explaining the tradeoffs behind common architecture decisions.
Systems
Start lessonSystem Design Cheatsheets
Review system requirements, architecture, storage, caching, queues, bottlenecks, and talking points.
Concepts
Start lessonSystem Design Flashcards
Practice core distributed systems concepts in plain English.
Scenarios
Start lessonTradeoff Quiz
Answer scenario questions about consistency, caching, queues, WebSockets, and scaling.