Vatana Technical Architecture

1. Technical Architecture

Backend Architecture

• Framework: Node.js with Express.js/NestJS
• Database:
  • Primary: PostgreSQL (structured data)
  • Document store: MongoDB (invoice storage)
  • Cache: Redis (session management, performance)
• API: RESTful with GraphQL for complex queries
• Authentication: JWT with OAuth2 integration
• Security:
  • AES-256 encryption
  • Zero-knowledge architecture implementation
  • Multi-region data replication
  • Immutable backup system

Frontend Architecture

• Framework: React with Next.js
• State Management: Redux/Context API
• Styling: Tailwind CSS with custom dark theme
• Component Library: Custom component system
• Data Visualization: D3.js/Chart.js
• Mobile Support: Responsive design with PWA capabilities

Infrastructure

• Hosting: AWS/Azure cloud infrastructure
• CI/CD: GitHub Actions/GitLab CI
• Monitoring: ELK stack + Prometheus
• Containerization: Docker with Kubernetes
• CDN: Cloudflare/Fastly

2. Core System Components

• User Management System
• VAT Processing Engine
• Tax Authority Integration Framework
• Reporting and Analytics
• Notification System

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