Handling Duplicate Shopify Webhook Events (And Why You Must)

<p>I review a lot of webhook handlers. Roughly <strong>3 out of 5 either have a subtle signature-verification bug</strong> — or someone disabled verification entirely "to make it

<p>Most Shopify middleware works fine in staging. It breaks in production, during a sale, at 11pm on a Friday.</p> <p>After auditing dozens of integrations, the failures are

<p>Your Shopify integration works great. Until it does not.</p> <p>You hit a traffic spike. Webhooks start failing. Your API quota drains in seconds. Orders process out of order.

<h1> Mitigating DB Lock Contention and Race Conditions in Asynchronous Webhook Ingestion </h1> <h2> 1. The Production Reality: Why Check-Then-Act Fails Under Load </h2> <p>In

<p>Two things quietly decide whether a small application survives being used: whether its reads<br /> are indexed, and whether its writes can be repeated safely. They are usually

<h1> Idempotency Keys: The Simple Trick That Prevents Duplicate Payments and Ghost Orders </h1> <p>You've seen it happen. A user clicks "Place Order," the network hiccups, the

<p>A customer can complete checkout once while your webhook handler receives the<br /> same event more than once. If every delivery creates access again, one purchase<br /> can

<p>If you process Stripe subscriptions and have never opened Workbench → Webhooks → Event deliveries (or the older Developers → Webhooks → Attempts view), there's a chance you