E-Commerce
Scalable Checkout System
Problem
Legacy monolith causing 40% cart abandonment during peak sales.
Solution
Migrated to microservices with real-time inventory sync.
Result
Conversion rate up 28%, checkout time reduced from 12s to 2.3s.
const CheckoutAPI = async (cart) => {
const { inventory, payment } = await Promise.all([
checkInventory(cart),
processPayment(cart)
]);
return { success: true, orderId: 'ORD-' + Date.now() };
};Q4 2025 • 3 months