Aggregation Service

[joalen]

Description:
Aggregate SKU-level demand data across sessions.

Acceptance Criteria:

• Aggregates SKU frequency and quantity
• Groups by time window (daily)
• Outputs structured dataset

Implementation Steps:

1. Design aggregation logic (group by SKU)
2. Build batch job or scheduled worker
3. Compute: total quantity and frequency
4. Store aggregated results
5. Validate accuracy