trading-platform/docs/00-vision-general/STACK-TECNOLOGICO.md

id	title	type	project	version	updated_date
STACK-TECNOLOGICO	Stack Tecnologico - Trading Platform	Documentation	trading-platform	1.0.0	2026-01-04

Stack Tecnologico - Trading Platform

Version: 1.0.0 Fecha: 2025-12-05 ADR Relacionado: ADR-001

---

Resumen del Stack

Capa	Tecnologia	Version	Justificacion
Frontend	React + TypeScript	18.x + 5.x	Ecosistema maduro, tipado fuerte
Build Tool	Vite	5.x	HMR rapido, ESM nativo
Styling	Tailwind CSS	3.x	Utility-first, dark mode
State	Zustand	4.x	Simple, sin boilerplate
Data Fetching	TanStack Query	5.x	Cache, refetch, optimistic
Charts	Lightweight Charts	4.x	TradingView quality, ligero
Backend API	Express.js + TypeScript	4.18.x + 5.x	Probado, flexible
Validation	Zod	3.x	Schema validation
Auth	JWT + Passport	9.x + 0.7.x	Estandar industria
ML Engine	Python + FastAPI	3.11+ + 0.100+	Async, tipado, OpenAPI
ML Models	XGBoost	2.x	Gradient boosting, rapido
Database	PostgreSQL	15+	ACID, JSON, extensiones
Cache	Redis	7.x	In-memory, pub/sub
Payments	Stripe	Latest	PCI compliant
SMS/WhatsApp	Twilio	Latest	Reach global

---

Frontend

Core

{
  "dependencies": {
    "react": "^18.2.0",
    "react-dom": "^18.2.0",
    "react-router-dom": "^6.20.0",
    "typescript": "^5.3.0"
  }
}

State Management

// Zustand store example
import { create } from 'zustand';

interface AuthState {
  user: User | null;
  isAuthenticated: boolean;
  login: (user: User) => void;
  logout: () => void;
}

export const useAuthStore = create<AuthState>((set) => ({
  user: null,
  isAuthenticated: false,
  login: (user) => set({ user, isAuthenticated: true }),
  logout: () => set({ user: null, isAuthenticated: false }),
}));

Data Fetching

// TanStack Query example
import { useQuery, useMutation } from '@tanstack/react-query';

function useCourses() {
  return useQuery({
    queryKey: ['courses'],
    queryFn: () => api.get('/courses'),
    staleTime: 5 * 60 * 1000, // 5 minutes
  });
}

function useEnrollCourse() {
  return useMutation({
    mutationFn: (courseId: string) => api.post(`/courses/${courseId}/enroll`),
    onSuccess: () => queryClient.invalidateQueries(['enrollments']),
  });
}

Charts

// Lightweight Charts example
import { createChart } from 'lightweight-charts';

const chart = createChart(container, {
  width: 800,
  height: 400,
  layout: {
    background: { color: '#1a1a2e' },
    textColor: '#d1d5db',
  },
  grid: {
    vertLines: { color: '#2d2d44' },
    horzLines: { color: '#2d2d44' },
  },
});

const candlestickSeries = chart.addCandlestickSeries({
  upColor: '#22c55e',
  downColor: '#ef4444',
});

Styling

/* Tailwind config */
module.exports = {
  darkMode: 'class',
  theme: {
    extend: {
      colors: {
        primary: {
          50: '#eef2ff',
          500: '#6366f1',
          900: '#312e81',
        },
        success: '#22c55e',
        danger: '#ef4444',
      },
    },
  },
};

---

Backend API

Core

{
  "dependencies": {
    "express": "^4.18.2",
    "typescript": "^5.3.0",
    "cors": "^2.8.5",
    "helmet": "^7.1.0",
    "compression": "^1.7.4"
  }
}

Authentication

{
  "dependencies": {
    "jsonwebtoken": "^9.0.2",
    "bcryptjs": "^2.4.3",
    "passport": "^0.7.0",
    "passport-google-oauth20": "^2.0.0",
    "passport-facebook": "^3.0.0",
    "passport-twitter": "^1.0.4",
    "passport-apple": "^2.0.2",
    "passport-github2": "^0.1.12",
    "speakeasy": "^2.0.0",
    "qrcode": "^1.5.3"
  }
}

Database

{
  "dependencies": {
    "pg": "^8.11.3",
    "redis": "^4.6.10"
  }
}

External Services

{
  "dependencies": {
    "stripe": "^14.7.0",
    "twilio": "^4.19.3",
    "nodemailer": "^6.9.7",
    "axios": "^1.6.2"
  }
}

Validation

// Zod schema example
import { z } from 'zod';

export const registerSchema = z.object({
  email: z.string().email(),
  password: z.string().min(8).regex(/[A-Z]/).regex(/[0-9]/),
  firstName: z.string().min(1).max(100),
  lastName: z.string().min(1).max(100),
  acceptTerms: z.literal(true),
});

export type RegisterInput = z.infer<typeof registerSchema>;

---

ML Engine

Core

# requirements.txt
fastapi>=0.100.0
uvicorn[standard]>=0.23.0
pydantic>=2.0.0
python-dotenv>=1.0.0

ML Libraries

# ML dependencies
xgboost>=2.0.0
scikit-learn>=1.3.0
pandas>=2.0.0
numpy>=1.24.0
ta-lib  # Technical analysis

Data Processing

# Data dependencies
pyarrow>=14.0.0
polars>=0.19.0  # Fast dataframes

API Example

# FastAPI endpoint
from fastapi import FastAPI, HTTPException
from pydantic import BaseModel
import numpy as np

app = FastAPI(title="Trading Platform ML Engine")

class PredictionRequest(BaseModel):
    symbol: str
    timeframe: str
    features: list[float]

class PredictionResponse(BaseModel):
    delta_high: float
    delta_low: float
    confidence: float
    signal: str

@app.post("/predict", response_model=PredictionResponse)
async def predict(request: PredictionRequest):
    # Load model and predict
    prediction = model.predict(np.array([request.features]))
    return PredictionResponse(
        delta_high=prediction[0][0],
        delta_low=prediction[0][1],
        confidence=0.85,
        signal="BUY" if prediction[0][0] > 0 else "SELL"
    )

---

Database

PostgreSQL Extensions

-- Required extensions
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";      -- UUID generation
CREATE EXTENSION IF NOT EXISTS "pgcrypto";       -- Encryption
CREATE EXTENSION IF NOT EXISTS "pg_trgm";        -- Text search
CREATE EXTENSION IF NOT EXISTS "btree_gin";      -- Index type

Schema Organization

PostgreSQL
├── public           # Users, profiles, auth
├── education        # Courses, lessons, quizzes
├── trading          # Bots, signals, positions
├── investment       # Products, accounts
├── financial        # Subscriptions, wallets
├── ml               # Models, predictions
└── audit            # Logs, events

Connection Pool

// Pool configuration
const pool = new Pool({
  host: config.database.host,
  port: config.database.port,
  database: config.database.name,
  user: config.database.user,
  password: config.database.password,
  max: 20,                    // Max connections
  idleTimeoutMillis: 30000,   // Close idle after 30s
  connectionTimeoutMillis: 5000,
});

---

Redis

Use Cases

Use Case	TTL	Pattern
Session tokens	7d	session:{userId}:{sessionId}
Rate limiting	15m	ratelimit:{ip}:{endpoint}
ML predictions cache	5m	ml:prediction:{symbol}:{tf}
Real-time data	1s	realtime:{symbol}
User preferences	1h	user:{userId}:prefs

Configuration

import { createClient } from 'redis';

const redis = createClient({
  socket: {
    host: config.redis.host,
    port: config.redis.port,
  },
  password: config.redis.password,
});

// Example usage
await redis.setEx(`session:${userId}`, 7 * 24 * 60 * 60, sessionData);

---

External Services

Stripe

import Stripe from 'stripe';

const stripe = new Stripe(config.stripe.secretKey);

// Create subscription
const subscription = await stripe.subscriptions.create({
  customer: customerId,
  items: [{ price: priceId }],
  payment_behavior: 'default_incomplete',
  expand: ['latest_invoice.payment_intent'],
});

Twilio

import twilio from 'twilio';

const client = twilio(accountSid, authToken);

// Send WhatsApp OTP
await client.messages.create({
  body: `Tu codigo Trading Platform: ${otp}`,
  from: 'whatsapp:+14155238886',
  to: `whatsapp:${phoneNumber}`,
});

---

DevOps

Docker

# Backend Dockerfile
FROM node:20-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --only=production
COPY dist ./dist
EXPOSE 3000
CMD ["node", "dist/index.js"]

Docker Compose

version: '3.8'
services:
  backend:
    build: ./apps/backend
    ports:
      - "3000:3000"
    depends_on:
      - postgres
      - redis

  ml-engine:
    build: ./apps/ml-engine
    ports:
      - "8001:8001"

  postgres:
    image: postgres:15-alpine
    volumes:
      - postgres_data:/var/lib/postgresql/data

  redis:
    image: redis:7-alpine
    volumes:
      - redis_data:/data

volumes:
  postgres_data:
  redis_data:

---

Testing

Layer	Framework	Coverage Target
Frontend	Vitest + Testing Library	70%
Backend	Jest + Supertest	80%
ML Engine	Pytest	75%
E2E	Playwright	Critical paths

Example Test

// Jest test example
describe('AuthService', () => {
  describe('login', () => {
    it('should return tokens for valid credentials', async () => {
      const result = await authService.login({
        email: 'test@example.com',
        password: 'ValidPass123!',
      });

      expect(result.tokens.accessToken).toBeDefined();
      expect(result.tokens.refreshToken).toBeDefined();
    });

    it('should throw for invalid password', async () => {
      await expect(
        authService.login({
          email: 'test@example.com',
          password: 'wrong',
        })
      ).rejects.toThrow('Invalid email or password');
    });
  });
});

---

Version Matrix

Dependency	Min Version	Recommended	Max Version
Node.js	18.0.0	20.x LTS	22.x
Python	3.10	3.11	3.12
PostgreSQL	14	15	16
Redis	6.x	7.x	7.x
React	18.0	18.2	18.x
TypeScript	5.0	5.3	5.x

---

Referencias

• ADR-001: Stack Tecnologico
• React Documentation
• Express.js
• FastAPI
• PostgreSQL
• Redis