Real-Time Inventory Updates

🔹 User Story 3 – Real-Time Inventory Updates

📌 Problem:
Inventory changes every second:

• Item goes out of stock after purchase.

• Supplier restocks.

• Customers keep adding/removing items from carts.

You need near real-time stock levels (to prevent overselling).

✅ Solution with Apache Hudi

• Hudi’s Merge-on-Read (MoR) storage allows streaming ingestion.

• Example:

  • As soon as an order is placed, inventory for that product is updated in seconds.

  • If supplier adds stock, Hudi merges the update in near real-time.

• It supports upserts → you can insert new rows or update existing rows (without full rewrites).

👉 This ensures customers always see the latest stock and fraud (overselling) is avoided.