⚖️ Putting It All Together – Technical Store Architecture
Delta Lake → Used for orders & payments (ensures accuracy, supports analytics + updates).
Apache Iceberg → Used for customer activity logs (massive scale, analytical queries, evolving partitions).
Apache Hudi → Used for inventory management (real-time upserts, streaming data).
📌 Example User Story Walkthrough
👤 User Story:
“As a store manager, I want to see today’s sales report (with refunds included), yesterday’s inventory status, and a 3-year trend of customer searches for laptops.”
Delta Lake → Ensures the sales report reflects refunds/cancellations (ACID transactions, time travel).
Hudi → Shows yesterday’s inventory correctly because it handles real-time updates and merges efficiently.
Iceberg → Powers the 3-year trend query on petabytes of clickstream logs with optimized partitioning.