How to Monitor Your E-commerce Site: A Complete Checklist

E-commerce downtime is not abstract. It is money leaving the table every second. An online store processing $50,000 per day loses $2,083 per hour, $34 per minute. And unlike SaaS, e-commerce customers who encounter errors during checkout abandon their cart and buy from a competitor. They do not come back. Here is a comprehensive monitoring checklist that covers every failure point.

The E-commerce Monitoring Checklist

1. Homepage and Landing Pages

Monitor type: HTTP with keyword validation. Check that the page returns 200 and contains your store name. Set a response time threshold — if your homepage takes more than 3 seconds, you are losing conversions. Google research shows 53% of mobile users abandon sites that take over 3 seconds to load.

2. Product Pages

Monitor type: HTTP with keyword validation. Monitor 2-3 representative product pages. Validate that the "Add to Cart" button text is present — this confirms the product page is fully functional.

3. Search Functionality

Monitor type: JSON API with assertions. Create a JSON API monitor that searches for a product you know exists and asserts the results array has at least one element. Broken search is functionally equivalent to an empty store.

4. Shopping Cart

Monitor type: Multi-step or HTTP. Verify the cart page loads and returns the expected status code. For deeper coverage, use a multi-step monitor that adds a product and verifies the cart updates.

5. Checkout Flow

Monitor type: Multi-step transaction. The checkout is the most revenue-critical path. Use a multi-step monitor to walk through as many checkout steps as possible without completing an actual purchase.

6. Payment Processing API

Monitor type: HTTP or JSON API. Monitor the health endpoint of your payment provider. For Stripe: https://status.stripe.com/api/v2/status.json. Know about payment provider outages before customers report failed checkouts.

7. SSL Certificate

Monitor type: SSL certificate. An expired certificate on an e-commerce site is a revenue catastrophe. Monitor your main domain and all subdomains. Set expiry warnings at 30 and 14 days.

8. CDN and Static Assets

Monitor type: HTTP. If your CDN is down, product images, CSS, and JavaScript do not load. Monitor a representative static asset URL and track response times.

9. Inventory and Pricing APIs

Monitor type: JSON API with assertions. Assert the response contains expected fields (stock quantity, availability status) and that the price field is a positive number.

10. Email Transactional System

Monitor type: SMTP or HTTP. Order confirmations and shipping notifications are critical. Monitor your email service's status API or use an SMTP monitor.

11. Site Performance

Monitor type: Lighthouse. Run audits on your homepage and top product pages. Every additional second of load time reduces e-commerce conversion rates by up to 7% (Akamai research).

12. DNS Records

Monitor type: DNS. Monitor your A/CNAME record with expected value validation. Monitor MX records to protect order confirmation email delivery.

Putting It All Together

A comprehensive e-commerce monitoring setup uses 10-15 monitors covering every layer of the customer journey. With Monitorion, you can set up this entire checklist using HTTP, SSL, DNS, JSON API, multi-step, SMTP, and Lighthouse monitors — all from a single dashboard.

Every minute of undetected downtime is lost revenue that never comes back. Start monitoring for free and protect every step of your customer's journey.