Best Custom Software Development
Company in India

// REST API with Node.js
const express = require('express');
const app = express();

app.post('/api/users', async (req, res) => {
    try {
        const { name, email, password } = req.body;
        
        // Validate input
        if (!name || !email || !password) {
            return res.status(400).json({ 
                error: 'All fields required' 
            });
        }
        
        // Hash password
        const hashedPassword = await bcrypt.hash(password, 10);
        
        // Create user
        const user = await User.create({
            name,
            email,
            password: hashedPassword
        });
        
        // Generate token
        const token = jwt.sign(
            { userId: user.id },
            process.env.JWT_SECRET
        );
        
        res.status(201).json({
            user: user.toJSON(),
            token
        });
    } catch (error) {
        res.status(500).json({ 
            error: 'Internal server error' 
        });
    }
});

-- Optimized Database Schema
CREATE TABLE customers (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    email VARCHAR(255) UNIQUE NOT NULL,
    company_name VARCHAR(255),
    created_at TIMESTAMP DEFAULT NOW(),
    updated_at TIMESTAMP DEFAULT NOW()
);

CREATE TABLE orders (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    customer_id UUID REFERENCES customers(id),
    total_amount DECIMAL(10,2),
    status VARCHAR(50) DEFAULT 'pending',
    created_at TIMESTAMP DEFAULT NOW()
);

-- Performance Indexes
CREATE INDEX idx_orders_customer_status 
ON orders(customer_id, status);