Inventory Data

Inventory data describes the availability and stock status of products at a point in time - whether in-stock, low-stock, out-of-stock, on backorder, or available for pre-order. It is the supply side of the retail market.

Inventory status is highly volatile - popular items can sell out in minutes during high-demand events. Applications that display product availability need to query live APIs close to the moment of display, not rely on cached inventory from hours earlier.

Inventory tracking is the basis of restock alert features: monitor inventory status on a polling schedule, and notify users the moment a product transitions from out-of-stock to in-stock. This requires frequent API polling or a webhook-based architecture.