All files / config database.js

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const { Sequelize } = require('sequelize');
require('dotenv').config();
 
const sequelize = new Sequelize(process.env.DATABASE_URL || 'postgresql://localhost:5432/crypto_trading_bot', {
  dialect: 'postgres',
  logging: process.env.NODE_ENV === 'development' ? console.log : false,
  pool: {
    max: 20,
    min: 0,
    acquire: 30000,
    idle: 10000
  },
  define: {
    timestamps: true,
    underscored: true,
    freezeTableName: true
  }
});
 
module.exports = sequelize;