Note from 14 December 2021

Early Hints are now activated on ! 🎉

Thanks #Cloudflare @CloudflareDev ! 🙏

I don't see much difference in #WebPageTest though, the site is already pretty fast… 😅

  1. screenshot of Performant A/B Testing with Cloudflare Workers

    Philip Walton avatar Philip Walton

    Performant A/B Testing with Cloudflare Workers

    The problem with the current A/B testing tools is they construct the test on the client. They block rendering until they can determine which experiment group the current user should be in, and then they update the DOM based on that experiment’s parameters. On slow connections or low-end devices, this can mean users are staring at a blank screen for seconds waiting for network requests to finish before rendering can even start.