Hi everyone, my name is Antoni and I'm a developer at omnicalculator.com. We used to do A/B tests with Google Optimize, but after a while of inactivity in this area (and the sunset of their platform), we chose Growthbook as the best looking alternative for us. Our site's infrastructure consists of an AWS-hosted server which is covered by KeyCDN for cost and performance reasons. After a fantastic demo with Matthew, in order to preserve those CDN-related benefits, we decided to try and integrate a Cloudflare Worker before the CDN, so that we could invoke some lightweight logic on the edge — like checking if a Growthbook test is enabled — and then serving the user a different page variant directly from KeyCDN. It proved to be quite troublesome, however, and so I was wondering whether anyone here was dealing with a similar setup, and if so, what worked for you.

What problem were you running into?

Thanks for a quick reply, we had no issues with Growthbook's SDK, but rather the infra itself. Here is a brief diagram of how our current "flow" looks like: 1. User enters omnicalculator.com/finance 2. The DNS resolves the domain to the AWS server 3. The server redirects them to the

www

subdomain which has a CNAME record pointing it to KeyCDN 4. What the user sees at www.omnicalculator.com/finance is a cached version of the page served by KeyCDN