abraham linksys posted:

Firebase (a real time key-value store as a service) has an interesting solution for this: security rules that let you limit access to your data. It's very, very simple (and built mainly for keeping a single user's data private to only them), but Firebase is only meant for simple data storage anyways (the real-time aspects are far more interesting than the actual "database").

But just pick something that makes it easy to write a minimal backend or API and you're good to go. We're not quite in a backend-less future, except for very simple use cases (though it is pretty awesome to prototype something w/o a backend).