Frontend System Design Blueprint
A practical blueprint for high-level design, scalability, and trade-offs.
Architecture diagramsScalability & reliabilityTrade-offs & checkpoints
Core concepts
2
Scope, Constraints, and Trade-offs
Clarifying requirements, identifying constraints, and making principled trade-offs before you draw boxes.
12 min
3
A Reusable 5-Step Approach
A simple, repeatable structure for tackling any FE system design interview question.
10 min
4
Rendering & App Architecture
CSR, SSR, islands, microfrontends—how to reason about architecture choices and trade-offs.
14 min
5
State, Data Flow, and Caching
Patterns for managing state, syncing with backends, and improving performance with caching.
15 min
Advanced topics
6
Performance & Web Vitals at Scale
How to reason about load times, rendering speed, and runtime optimizations during interviews.
12 min
7
Accessibility, i18n & Offline First
Covering cross-cutting concerns that separate good answers from great ones.
10 min
Interview focus
8
What Interviewers Really Look For
Signals that matter most: clarity, prioritization, and reasoning about trade-offs.
9 min
9
Traps and Anti-Patterns to Avoid
Common mistakes candidates fall into and how to avoid them under pressure.
8 min
10
One-Page Checklist for Interviews
A quick mental map to keep in mind for any system design question.
6 min