Front End System Design Fundamentals (All In One Comprehensive Guide)

Are you aiming for mid, senior, staff, or even principal roles as a frontend engineer? Prepare yourself for frontend system design interviews with top-tier tech companies by mastering the fundamentals. has over 100 questions to get you interview ready, including system design. 20% off annual plans with discount code: 20OFF In this comprehensive video, we introduce you to the framework, a powerful tool designed to equip you with the skills needed to excel in Frontend System Design interviews. R - Requirements: Laying the Foundation Learn how to define functional and non-functional requirements, identifying core features, good-to-have features, device and platform support, offline functionality, user personas, and more. Lay a strong foundation for your frontend system design. A - Architecture and High-Level Design Explore the key components of a frontend architecture, including the server, view, controller, and model/client store. Understand the importance of separation of concerns and the decision between server-side and client-side computation. A well-structured architecture is crucial for building scalable and maintainable frontend applications. D - Data Model: Managing Client-Only Data Discover how to manage client-only data efficiently. Categorize data into that to be persistent and ephemeral. Learn how to handle user input data and ensure proper data validation and storage strategies. I - Interface Definition and API Design: Making Informed Choices Gain insights into various API design options, including polling, long polling, WebSockets, Server-Sent Events, REST APIs, and GraphQL. Understand the trade-offs and choose the right API design for your project. Plus, learn about common API considerations, like status codes, throttling, and pagination. O - Optimizations and Deep Dive in Frontend System Design Dive deep into optimization strategies for performance, network efficiency, and user experience. Learn about network optimizations, bundle splitting, rendering, server-side rendering, CSS best practices, application caching, and mobile-friendly design. Ensure accessibility and security in your frontend system design. By mastering these Frontend System Design fundamentals, you’ll be well-prepared for your next interview with top-tier tech companies. Join us in this comprehensive guide to advance your front-end engineering career. Credits to for the blueprint. Timestamps Intro: 0:00 FrontendLead: 1:37 Framework Overview: 2:37 Requirements: 4:38 Architecture: 8:52 Data Model: 12:41 API Design: 15:05 Performance: 23:15 Network: 23:34 Rendering: 27:40 Accessibility: 34:59 Security: 36:01