I'm not familiar with the approach either, but the video mentioned that you would mainly execute these queries using a client side library. The library would be

I'm not familiar with the approach either, but the video mentioned that you would mainly execute these queries using a client side library. The library would be backend agnostic, and offer remote sync capabilities. So I believe you can set the primary backend for the library to a local, in-memory data-structure to serve as the local cache, and have the library handle synchronization between the local cache and a remote backend that can also execute these queries.