Hey all, I've been seeing confusion in the comments, so I'll link to official FoundationDB docs that do a better job of explaining these concepts.

To get a high level overview and see what you can do: https://apple.github.io/foundationdb/features.html https://apple.github.io/foundationdb/design-recipes.html

Then to dive in a bit: https://apple.github.io/foundationdb/data-modeling.html https://apple.github.io/foundationdb/developer-guide.html (Subspaces, Directories, and Transactions)

Also, the section on Anti-Features is interesting: https://apple.github.io/foundationdb/anti-features.html