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Frontend System Design
The RADIO Framework
Requirements
Architecture
Data Modeling
Interface Design
Performance Optimizations for Frontend System Design Interviews
Data Normalization in Frontend System Design
Common Frontend System Design Mistakes
Apollo Client Caching
ARIA Roles and Attributes
Broadcast Channel API Guide
Core Web Vitals Guide
Image Caching Strategies
Image Optimization Strategies
IndexedDB Guide
Data Fetching Strategies
Frontend Security Best Practices
Server-Side Rendering vs Client-Side Rendering
Web Accessibility Best Practices
Understanding XSS and CORS
Designing an Autocomplete System
Design Google Sheets
Designing Pinterest's Frontend Architecture
Designing a Sprint Board
Design Rich Text Editor (WYSIWYG)
Design Chat Application
Basics

Requirements

How to define scope, constraints, and success criteria before writing a single line of code

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The RADIO Framework

A structured approach to nailing frontend system-design interviews

Architecture

Learn how to plan client-side architecture in frontend system design interviews

On this page

Requirements: Getting Aligned Before You BuildStep 1: Functional Scope DefinitionSample: Social Content PlatformStep 2: Non-Functional RequirementsPerformance BudgetsScale ExpectationsCompliance and SecurityStep 3: Capacity Planning (Envelope Math)Sample Calculation: Microblogging PlatformStep 4: User Journey MappingPrimary JourneysStep 5: Technical Constraints and ContextPlatform RequirementsIntegration PointsTeam and TimelineStep 6: Data Entity OverviewPrimary EntitiesEffective Requirements QuestionsScope ClarificationConstraints DiscoveryScale Assumptions

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