REC Verifiable Credentialing Platform Tech Stack¶

Overview¶

This document outlines the comprehensive technology stack for the REC Verifiable Credentialing Platform, a multi-tenant SaaS solution for issuing, managing, and verifying digital credentials using the Velocity Network.

Architecture Overview¶

The platform follows a modern, cloud-native architecture with clear separation between frontend, backend, and external integrations.

High-Level Architecture¶

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   Frontend      │    │    Backend      │    │   External      │
│   (React/Next)  │◄──►│   (NestJS)      │◄──►│   Services      │
│                 │    │                 │    │                 │
└─────────────────┘    └─────────────────┘    └─────────────────┘
                              │
                              ▼
                       ┌─────────────────┐
                       │   Database      │
                       │  (PostgreSQL)   │
                       └─────────────────┘

Frontend Technology Stack¶

Core Framework¶

React 18+ - Modern React with hooks and concurrent features
Next.js 14+ - Full-stack React framework with App Router
TypeScript - Type-safe JavaScript development

UI/UX¶

Tailwind CSS - Utility-first CSS framework
Headless UI - Unstyled, accessible UI components
React Hook Form - Performant forms with easy validation
Zod - TypeScript-first schema validation

State Management¶

Zustand - Lightweight state management
TanStack Query (React Query) - Server state management
React Context - Component-level state sharing

Authentication¶

Auth0 React SDK - Authentication and authorization
NextAuth.js - Authentication for Next.js applications

Backend Technology Stack¶

Core Framework¶

Node.js 18+ - JavaScript runtime
NestJS - Progressive Node.js framework
TypeScript - Type-safe server-side development

Database & ORM¶

PostgreSQL 15+ - Primary relational database
TypeORM - Object-relational mapping
Redis - Caching and session storage

Authentication & Authorization¶

Auth0 - Identity and access management
JWT - JSON Web Tokens for stateless authentication
Passport.js - Authentication middleware

API & Communication¶

REST API - RESTful web services
GraphQL (Optional) - Query language for APIs
WebSockets - Real-time communication
Swagger/OpenAPI - API documentation

External Integrations¶

Velocity Network SDK - Verifiable credential operations
SendGrid - Email delivery service
Stripe (Future) - Payment processing

Infrastructure & DevOps¶

Cloud Platform¶

AWS - Primary cloud provider
ECS/Fargate - Container orchestration
RDS - Managed PostgreSQL
ElastiCache - Managed Redis
S3 - Object storage
CloudFront - CDN
Route 53 - DNS management

Containerization¶

Docker - Application containerization
Docker Compose - Local development orchestration

CI/CD¶

GitHub Actions - Continuous integration and deployment
AWS CodePipeline - Deployment pipeline
AWS CodeBuild - Build service

Monitoring & Logging¶

AWS CloudWatch - Monitoring and logging
Sentry - Error tracking and performance monitoring
AWS X-Ray - Distributed tracing

Security Stack¶

Authentication & Authorization¶

Auth0 - Multi-tenant identity management
OAuth 2.0 / OpenID Connect - Industry standard protocols
RBAC - Role-based access control
MFA - Multi-factor authentication

Data Security¶

TLS 1.3 - Transport layer security
AES-256 - Data encryption at rest
AWS KMS - Key management service
Secrets Manager - Secure credential storage

Compliance¶

SOC 2 Type II - Security compliance framework
GDPR - Data protection regulation compliance
CCPA - California privacy law compliance

Development Tools¶

Code Quality¶

ESLint - JavaScript/TypeScript linting
Prettier - Code formatting
Husky - Git hooks
lint-staged - Pre-commit linting

Testing¶

Jest - JavaScript testing framework
React Testing Library - React component testing
Cypress - End-to-end testing
Supertest - HTTP assertion testing

Development Environment¶

VS Code - Recommended IDE
Docker Desktop - Local containerization
Postman - API testing
pgAdmin - PostgreSQL administration

Velocity Network Integration¶

Core Components¶

Velocity Network SDK - Official SDK for credential operations
DID (Decentralized Identifiers) - Identity management
Verifiable Credentials - W3C standard credentials
Verifiable Presentations - Credential presentations

Integration Points¶

Credential Issuance - Issue verifiable credentials
Credential Verification - Verify credential authenticity
Schema Management - Manage credential schemas
Revocation Registry - Handle credential revocation

Performance & Scalability¶

Frontend Optimization¶

Next.js App Router - Optimized routing and rendering
Image Optimization - Automatic image optimization
Code Splitting - Lazy loading of components
Service Workers - Offline functionality

Backend Optimization¶

Connection Pooling - Database connection management
Caching Strategy - Redis-based caching
Rate Limiting - API rate limiting
Load Balancing - Horizontal scaling

Database Optimization¶

Indexing Strategy - Optimized database queries
Read Replicas - Distributed read operations
Connection Pooling - Efficient connection management

Deployment Architecture¶

Environment Strategy¶

Development - Local development environment
Staging - Pre-production testing environment
Production - Live production environment

Deployment Pipeline¶

Code Commit - Developer pushes code
Automated Testing - Run test suites
Build Process - Create Docker images
Security Scanning - Vulnerability assessment
Deployment - Deploy to target environment
Health Checks - Verify deployment success

Future Considerations¶

Potential Enhancements¶

Microservices Architecture - Service decomposition
Kubernetes - Container orchestration
GraphQL Federation - Distributed GraphQL
Event-Driven Architecture - Asynchronous processing
Machine Learning - Fraud detection and analytics

Scalability Planning¶

Auto-scaling - Dynamic resource allocation
CDN Optimization - Global content delivery
Database Sharding - Horizontal database scaling
Caching Layers - Multi-level caching strategy

Technology Rationale¶

Why This Stack?¶

Modern & Mature - Proven technologies with strong community support
Type Safety - TypeScript throughout the stack reduces runtime errors
Developer Experience - Excellent tooling and development workflow
Scalability - Architecture supports horizontal and vertical scaling
Security - Enterprise-grade security features and compliance
Performance - Optimized for speed and efficiency
Maintainability - Clean architecture and coding standards
Cost Effective - Efficient resource utilization

Getting Started¶

For detailed implementation guides, see: - System Architecture - Recommended Stack - System Design - Auth0 Implementation - Velocity Network APIs