Comment by LukeEF

Like you, I don't have any experience with RecallGraph, but I have been following Arango closely (I work with TerminusDB). First impression is that it looks very interesting and going in a similar 'like Git but for data' direction as Terminus. I'd be somewhat concerned about building on Arango - without your own storage layer, some of the engineering challenges will be very tricky.

When we first built Terminus, we used Postgres as a store, but found that it was too slow for the types of queries we wanted to run. After a HDT detour, we built our own in the end(https://terminusdb.com/blog/2020/04/14/terminusdb-a-technica...)

I think graph dbs (crux, terminus or recall) are very natural places for revision control.