Tech Stack

Blockchain & Smart Contracts

Core Technologies

Layer	Technology	Version	Purpose
Blockchain	Sui Network	Mainnet	Main Infrastructure
Language	Move	Latest	Smart Contracts
Variation Engine	On-chain Move	v1.0	Quiz Security
Storage	IPFS + Arweave	-	Content Storage
Oracle	Pyth Network	v1.0	Price Data

Why Sui Was Chosen

1. High Throughput: Processes thousands of transactions per second
2. Low Latency: Near real-time finality
3. Parallel Processing: Independent transaction parallel execution
4. Gas Efficiency: Predictable and low gas fees
5. Move Language: Safe and expressive smart contracts

Frontend

Web Application Stack

Component	Technology	Version	Role
Framework	Next.js	14	React Meta-framework
Language	TypeScript	5.0	Type Safety
UI Library	Tailwind CSS	3.4	Styling
Components	shadcn/ui	Latest	UI Components
State Management	Zustand	4.4	Client State
Sui Integration	@mysten/sui.js	Latest	Blockchain Integration
Wallet Integration	@mysten/dapp-kit	Latest	Wallet Management

Main Libraries

{
  "dependencies": {
    "@mysten/sui.js": "^0.48.0",
    "@mysten/dapp-kit": "^0.12.0",
    "next": "^14.0.0",
    "react": "^18.2.0",
    "typescript": "^5.0.0",
    "tailwindcss": "^3.4.0",
    "zustand": "^4.4.0",
    "@tanstack/react-query": "^5.0.0",
    "wagmi": "^2.0.0",
    "viem": "^2.0.0"
  }
}

Backend (Minimized)

API and Service Layer

Service	Technology	Purpose	Scalability
API Server	Node.js + Express	Metadata Serving	Horizontal
Database	PostgreSQL	Off-chain Cache	Read Replica
File Storage	IPFS Pinning	Content Availability	Multi-node
Authentication	JWT + Wallet Signature	User Authentication	Stateless
Queue System	Redis + Bull	Asynchronous Jobs	Cluster

Microservice Architecture

┌─────────────────────────────────────┐
│         API Gateway (Kong)          │
└─────────────────────────────────────┘
                  │
    ┌─────────────┼─────────────┐
    ▼             ▼             ▼
┌─────────┐ ┌─────────┐ ┌─────────┐
│  Auth   │ │Metadata │ │Analytics│
│ Service │ │ Service │ │ Service │
└─────────┘ └─────────┘ └─────────┘

AI & Security Layer

Variation Engine Integration

Core Features

1. Quiz Encryption: Zero-knowledge encryption
2. Question Transformation: Real-time variation generation
3. Answer Validation: Semantic accuracy judgment
4. Security Management: Key management and access control

API Endpoints

interface VariationEngine {
  // Quiz encryption
  encryptQuiz(content: string): Promise<EncryptedQuiz>;
  
  // Variation generation
  generateVariant(quizId: string, seed: string): Promise<TransformedQuiz>;
  
  // Answer validation
  validateAnswer(answer: string, quizId: string): Promise<boolean>;
}

Infrastructure & DevOps

Deployment Environment

Environment	Service	Purpose
Production	Vercel	Frontend Hosting
API	Railway	Backend Services
Database	Supabase	PostgreSQL
Storage	IPFS + Pinata	Distributed Storage
CDN	Cloudflare	Global Distribution

CI/CD 파이프라인

name: Deploy Pipeline

on:
  push:
    branches: [main]

jobs:
  test:
    - Run unit tests
    - Run integration tests
    - Type checking
    
  build:
    - Build frontend
    - Build smart contracts
    - Generate artifacts
    
  deploy:
    - Deploy contracts to Sui
    - Deploy frontend to Vercel
    - Update API services

Monitoring & Analytics

Monitoring Stack

Tool	Purpose	Metrics
Sentry	Error Tracking	Error Rate, Stack Traces
Posthog	User Analytics	User Behavior, Conversion Rate
Grafana	System Metrics	Performance, Availability
Datadog	APM	Response Time, Throughput

Key Metrics

1. Business Metrics

   • DAU/MAU
   • Exam Completion Rate
   • Matching Success Rate
   • Revenue

2. Technical Metrics

   • API Response Time
   • Transaction Success Rate
   • Gas Usage
   • Error Rate

Security Considerations

Security Layers

1. Smart Contract Security

   • Formal verification
   • Audit by CertiK
   • Bug bounty program

2. Application Security

   • OWASP Top 10 compliance
   • Rate limiting
   • DDoS protection
   • CSP headers

3. Data Security

   • Encryption at rest & in transit
   • PII minimization
   • GDPR compliance

Performance Optimization

Frontend Optimization

1. Code Splitting: Reduce bundle size with dynamic imports
2. Image Optimization: Utilize Next.js Image component
3. Caching Strategy: Data caching with SWR/React Query
4. SSR/SSG: SEO and initial loading optimization

Blockchain Optimization

1. Batch Processing: Multiple operations in single transaction
2. Gas Optimization: Efficient data structure usage
3. Indexing: Event-based off-chain indexing
4. Caching: Cache frequently queried data

Development Tools

Essential Tools

# Sui CLI
cargo install --locked --git https://github.com/MystenLabs/sui.git sui

# Move Analyzer
cargo install --git https://github.com/move-language/move move-analyzer

# Development dependencies
npm install -D @types/node typescript eslint prettier

VS Code Extensions

• Move Analyzer
• Sui Move Syntax
• TypeScript + ESLint
• Tailwind CSS IntelliSense

Future Technology Roadmap

Short-term (3 months)

• WebSocket real-time updates
• Progressive Web App
• Multi-language support

Mid-term (6 months)

• Mobile App (React Native)
• GraphQL API
• AI recommendation system

Long-term (12 months)

• Cross-chain support
• Decentralized storage
• Zero-knowledge proofs