Elixir/Erlang A/B Ecommerce Testing

Has anyone done a successful A/B test on an eCommerce website built with Elixir with the cart/checkout? I’ve inherited an Elixir site and (admittedly) it’s my first foray into the language and I’m unsure what my options are for splitting traffic to the cart.

Tools like Optimizely may/may not work, but wondering if anyone has already created the wheel here.

Much thanks in advance!

Curious what solutions do you use for A/B testing if any?