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Tech Stack (v0.1) - FINALIZED

Finalized Stack

Layer Technology Version
Language TypeScript ^5.x
Runtime Node.js ^20.x
Server Express.js ^4.x
Frontend HTML + Vanilla JS -
Data In-memory -
Development ts-node, nodemon ^10.x, ^3.x

Project Structure

src/
├── index.ts         # Entry point (Express server)
├── types.ts       # Data models & interfaces
├── pricing.ts    # Pricing engine logic
├── data.ts        # In-memory data store
├── api.ts         # REST API endpoints
└── public/       # Frontend static files
    ├── index.html
    ├── style.css
    └── app.js

Dependencies

{
  "dependencies": {
    "express": "^4.21.0",
    "cors": "^2.8.5"
  },
  "devDependencies": {
    "typescript": "^5.6.0",
    "ts-node": "^10.9.2",
    "nodemon": "^3.1.4",
    "@types/node": "^22.0.0",
    "@types/express": "^5.0.0",
    "@types/cors": "^2.8.17"
  }
}

Purpose

This document defines the technological approach for building the Dynamic Drink Market (DDM) system.

Application Scope (v0.1)

The initial version of the system will:

  • Simulate order events
  • Execute pricing logic
  • Produce observable outputs
  • Run as local on-premise application (not web/Cloud)
  • Provide control panel for business users

Clarifications

What This Project Is NOT

Concept Reality
Web development Uses browser for convenience, but runs locally
SaaS On-premise, not hosted on internet
Customer-facing Business internal use, not for end customers

How It Works

┌─────────────────┐      ┌──────────────────┐
│   NEGOCIO        │      │  DDM (local)     │
│ (Bar/Restaurant)│ ──── │  - Panel control │
│                  │      │  - Server local │
│   Camarero      │      │  - Red local     │
│   Caja          │      │  - No internet   │
└─────────────────┘      └──────────────────┘

Architecture (v0.1)

src/
├── index.ts      # Servidor Express (entry point)
├── types.ts     # Interfaces de datos
├── pricing.ts  # Motor de precios
├── data.ts     # Almacenamiento en memoria
├── api.ts      # Endpoints REST
└── public/   # Archivos estáticos
    ├── index.html
    ├── style.css
    └── app.js

Future Considerations

Area Technologies
Database SQLite, PostgreSQL
Real-time WebSockets
Desktop Electron
Deployment Docker