REDCAAP Framework for Frontend SD

REDCAAP Framework for Frontend SD

RE — Requirements

Functional Requirements

• Core features & user interactions
• User stories & use cases

Non-Functional Requirements

• Performance (latency, load time)
• Accessibility (a11y)
• Scalability & availability
• Compatibility (devices, browsers)
• Security
• Localization / i18n

D — Design Patterns & Architecture Decision

• MVC vs MVVM vs MVP
• SPA vs MPA
• Monolithic SPA vs Micro-frontend
• Component-based vs Monolithic UI
• Unidirectional vs Bidirectional data flow
• Rendering Strategy (CSR/SSR/SSG/ISR/Hybrid)

C — Component & Hierarchy

• Break UI into modular, reusable components
• Single Responsibility per component
• Component hierarchy definition
• State management within components
• Avoid unnecessary re-renders

A — Architecture (HLD)

• Modular frontend components → cohesive UI
• Frontend components → Backend service mapping
• State management layer design
• Routing architecture
• Infrastructure (CDN, CI/CD, Service Workers)

A — API Design

• Choose API style (REST / GraphQL / gRPC / WebSocket / SSE)
• Define endpoints clearly
• Data model design (avoid over/under-fetching)
• Authentication & Authorization
• Error handling patterns
• Pagination, filtering, sorting

P — Performance Optimization

• Core Web Vitals (LCP, FID/INP, CLS)
• Code splitting & lazy loading
• Bundle size optimization & tree shaking
• Image optimization (WebP, AVIF)
• Caching (Browser, CDN, Service Worker)
• Virtualization for long lists
• Debouncing & throttling
• Accessibility (ARIA, semantic HTML, keyboard nav)
• Security (XSS, CSP, CORS, rate limiting)
• Localization & i18n support
• Observability (Sentry, Web Vitals monitoring)

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