The main target of the Godot Engine are game developers. But Godot's easy workflow and functional UI elements, makes it also a good fit for non-game applications. There are already some out there you may know, like Pixelorama, an Open Source 2D sprite editor.
I guess it’s more likely to have “decentralized” code using Godot to build an app because of how it’s used in game dev. But that’s seen a lot in web dev too. You might have a react component handle state and children components with their own logic. Sometimes those components are “pure” and only deal with data given to it, sometimes they’re “stateful” and you end up needing to pass data up to the parent.
With proper planning, one could probably avoid mixing up what parts of the app should be pure/stateful.
Is there a good way to make a redux-like central state container in Godot?
(I'm sure there are many ways to do it but wondering if there is someone who has found a good practice for it.)
You could pretty easily do this as an autoload so it's accessible from anywhere. You could store the actual state as a dictionary or a resource, or even a whole db if you wanted depending on what you're storing.
It's a little old but looks like someone even implemented a redux inspired store! https://github.com/glumpyfish/godot_redux
No idea if that still works, but probably would be too hard to use it as inspiration or even update it to the latest 3.x version