A duplicate webhook should not change inventory twice.

Commerce Sync is my multi-store Shopify integration example. Product changes move between storefronts, and inventory updates make their way back to the parent store.

The part I care about is what happens when something fails. PostgreSQL catches duplicate deliveries, pg-boss keeps jobs durable, and separate workers handle throttling and retries. Partial syncs have a rollback path.

I put the architecture and implementation decisions in the case study below. Client details are removed, and the render is a concept illustration.

I am taking on Shopify app integrations and backend maintenance, remotely from India, up to 20 hours a week.

Check it out

Looks amazing 🤩