Prepare for the Surge

Load testing frameworks and server stress-testing strategies to keep your store online during massive traffic spikes.

Shopify's Infrastructure

While Shopify handles server scaling for you, your theme might still crash if it makes too many API calls or relies on slow third-party apps.

How to Test

Use tools like k6 or JMeter to simulate thousands of concurrent users adding items to their cart.

Third-Party App Audits

Identify which apps inject heavy JavaScript. Disable non-essential apps (like heatmaps or heavy review widgets) during peak Black Friday hours to ensure checkout remains lightning fast.