Real-time Inventory Sync for Multi-channel E-commerce

The Challenge

• The client operated across Shopify, Amazon FBA, and a custom headless React storefront. Relying on manual CSV uploads for inventory reconciliation created a 4-hour data lag, resulting in frequent overselling (stockouts) during high-traffic windows and significant manual administrative overhead.

The Solution

• Architected an event-driven middleware using n8n to synchronize stock levels. The system utilizes webhooks to capture order events immediately upon checkout. A Redis database serves as the high-speed 'source of truth' to handle concurrency and prevent race conditions. The workflow then broadcasts API updates to all sales channels simultaneously, with built-in retry logic for API rate limits and a Slack alert system for sync failures.

Results

“The system acts as a silent engine for our business now. We went from constant inventory anxiety to a completely hands-off operation. Avnish built a solution that handles our volume without flinching.”— Sarah Jenkins, Operations Director