System Architecture Overview

High-Level Architecture

The Restaurant Speisekarte application follows a component-based architecture using Next.js and React, designed for simplicity, maintainability, and performance.

Architecture Diagram

┌─────────────────────────────────────────────────────────────┐
│                    Browser (Client)                         │
├─────────────────────────────────────────────────────────────┤
│                 Next.js Frontend                            │
│  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐        │
│  │   Pages     │  │ Components  │  │   Styles    │        │
│  │ (index.js)  │  │   Layer     │  │ (CSS Modules)│       │
│  └─────────────┘  └─────────────┘  └─────────────┘        │
│         │               │                  │               │
│  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐        │
│  │   Service   │  │    Data     │  │   Assets    │        │
│  │   Layer     │  │   Layer     │  │  (Images)   │        │
│  └─────────────┘  └─────────────┘  └─────────────┘        │
├─────────────────────────────────────────────────────────────┤
│                 Vercel Platform                             │
│              (Static Hosting + CDN)                        │
└─────────────────────────────────────────────────────────────┘

System Components

1. Presentation Layer

• Pages: Next.js page components (/src/pages/)
• Components: Reusable UI components (/src/components/)
• Styles: CSS Modules for component styling (/src/styles/)

2. Business Logic Layer

• Service Layer: Business logic and data processing (/src/service/)
• Data Layer: Static data management (/src/data/)

3. Asset Layer

• Images: Optimized product images (/public/assets/)
• Static Assets: Icons, banners, and other resources

Key Design Principles

1. Component-Based Architecture

• Modularity: Each component has a single responsibility
• Reusability: Components can be composed and reused
• Encapsulation: CSS Modules provide style isolation

2. Data Flow Architecture

Data Source → Service Layer → Components → UI
     ↓             ↓            ↓        ↓
  Static Data → Filter/Search → Props → Render

3. State Management

• Local State: React hooks (useState) for component state
• Props Drilling: Parent-to-child data flow
• Event Handling: User interactions bubble up to parent components

Technology Stack Integration

Frontend Framework

• Next.js 14: React framework with SSG/SSR capabilities
• React 18: Component library with modern hooks
• CSS Modules: Scoped styling solution

Performance Optimizations

• Next.js Image: Automatic image optimization
• Static Generation: Pre-rendered pages for fast loading
• Code Splitting: Automatic bundle optimization

Development Tools

• ESLint: Code quality and consistency
• npm: Package management
• Git: Version control

Scalability Considerations

Current Architecture Benefits

• ✅ Fast initial page load (static generation)
• ✅ Optimized images and assets
• ✅ Clean component separation
• ✅ Easy to maintain and extend

Future Enhancement Opportunities

• 🔄 Add API integration for dynamic data
• 🔄 Implement global state management (Context API/Redux)
• 🔄 Add unit and integration testing
• 🔄 Implement internationalization (i18n)

Security Considerations

Current Implementation

• ✅ No sensitive data exposure (static content)
• ✅ HTTPS by default (Vercel)
• ✅ No authentication required (public menu)

Production Security

• CSP headers via Vercel
• Automatic security updates
• No backend vulnerabilities (static site)

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