Hey dev.to - we just launched Nventory on the Shopify App Store and I wanted to share the technical decisions behind what we built and why.
Not a feature list. The actual architectural thinking.
The problem we kept seeing
Every multichannel seller we talked to had the same story.
Running Shopify alongside Amazon, Flipkart, or eBay. Inventory going out of sync during high-traffic periods. Oversells during flash sales. Marketplace accounts flagged for cancellations that came from nowhere.
All traceable back to one architectural decision most inventory tools make — polling.
javascript// What most inventory tools are doing under the hood
setInterval(async () => {
const stock = await getSourceOfTruth();
await syncToAllChannels(stock);
}, 15 * 60 * 1000);
// The problem
const windowsPerDay = (24 * 60) / 15; // 96
// 96 times per day where channels disagree about stock
// At flash sale velocity: catastrophic
96 windows per day where channels show different stock. At normal velocity
Discussion
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