Replacing LaunchDarkly flags on our Hydrogen build, is Croct a fit?
we use LaunchDarkly on our Hydrogen storefront for feature flags and simple percentage rollouts. Two things pushed us to look elsewhere. The client-side evaluation flashed the wrong content on load because the SDK had to download rules before deciding, and the experimentation add-on is metered per MAU on top of the flag seats, which got expensive fast for a public storefront.
Can Croct cover the same ground, flags plus the occasional rollout test, without those two problems? Trying to size whether it actually replaces what we have.
2 answers
Yes, both of those map cleanly onto how Croct works. It supports feature flags and server-side testing, and on Hydrogen those resolve in your loaders. Because the flag is evaluated server-side before the page is sent, there is no window where the SDK is downloading rules on the client, so the flash of wrong content you had with LaunchDarkly does not happen, the page arrives already decided.
On the cost side, experiments are Bayesian and unsampled and are part of the platform, there is no separately metered client-side experimentation layer to bolt on the way the LaunchDarkly add-on is.
after LaunchDarkly's client flags flashing the wrong variant, evaluating them in the loader and watching that flash disappear was the payoff, our PDP stopped doing that half-second swap on every load.
that is the combination I was hoping for, the flash gone and the metering gone. thanks, this gives me enough to run a proper trial.
To add the mental model that helped me during our move: flags and experiences attach to slots the same way personalization does. So you are not learning a separate flag system bolted onto a testing system, it is the same slot plus server-side evaluation you would use for a personalized hero, just gating a feature instead. That is also why the no-flash behavior is automatic, it is the same loader resolution path throughout.