E-commerce with affiliate tracking

How a Nordic e-commerce site got data-driven "Popular products" based on actual clicks, in just 30 minutes.

The problem

A Nordic e-commerce site selling electronics accessories had a "Popular products" section on its homepage. The problem? The list was manually curated and only updated every other week.

This led to several problems:

• Products that actually were popular never showed up
• Expired or sold-out products stayed on the list
• No insight into what visitors were actually interested in
• Manual work to keep the list up to date

The solution

With Savri they could switch to a data-driven approach:

The implementation

The integration consisted of two parts:

1. Track clicks with va()

On every affiliate link they added an event that is sent to Savri:

// When a user clicks "Buy at X"
va('event', 'affiliate_click', {
  product_id: 'iphone-15-case-123',
  category_slug: 'phone-cases',
  partner_slug: 'teknikdelar'
});

2. Fetch popular products via the API

On the server side they fetch data from the Popular Products API:

const { data, meta } = await fetch(
  'https://savri.io/api/v1/popular/products?site_id=X&days=7&limit=12',
  { headers: { Authorization: 'Bearer bk_xxx' } }
).then(r => r.json());

// Fallback if there is too little data
if (meta.confidence === 'low') {
  return getFallbackProducts();
}

return data.map(p => p.product_id);

Key feature: Confidence

One of the most important features is the confidence level. The API returns how reliable the result is based on the amount of data:

This means the site always has something to show, even before enough click data has been collected.

Results

Since the integration, the e-commerce site has:

• Automatic updates - Popular products are based on the last 7 days of clicks
• No manual effort - The list takes care of itself
• Insights in the dashboard - Can see which products are trending in the Properties tab
• Robust fallback - Works even with little traffic

"The integration was surprisingly easy. The RFC documentation was clear, the API is standard REST with a Bearer token, and the confidence level makes fallback logic trivial."

Developer, Nordic e-commerce site