# 3. Technology Stack

## Frontend

| Technology | Version | Purpose |
|------------|---------|---------|
| React | 19.x | UI library |
| TanStack Router | 1.x | Type-safe routing |
| TanStack Query | 5.x | Server state management |
| Zustand | 5.x | Client state management |
| Tailwind CSS | 4.x | Utility-first styling |
| shadcn/ui | latest | Component library |
| Lucide React | latest | Icons |
| React Hook Form | 7.x | Form management |
| Zod | 3.x | Schema validation |

## Backend

| Technology | Version | Purpose |
|------------|---------|---------|
| TanStack Start | 1.x | Full-stack framework |
| Prisma | 6.x | Database ORM |
| Zod | 3.x | Input validation |
| node-cache | 5.x | In-memory caching |
| Pino | 9.x | Structured logging |
| bcryptjs | 2.x | Password hashing |

## Database

| Technology | Version | Purpose |
|------------|---------|---------|
| PostgreSQL | 16.x | Primary database |

## DevOps

| Technology | Purpose |
|------------|---------|
| Docker | Containerization |
| Docker Compose | Local development & deployment |
| Traefik | Reverse proxy, SSL termination |
| GitLab CI | CI/CD pipeline |

## Development Tools

| Tool | Purpose |
|------|---------|
| TypeScript | Type safety |
| Biome | Linting & formatting |
| Vitest | Unit testing |
| Playwright | E2E testing |

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