Are there plans to store the database on disk?

[curiosport]

I would like column to be persistent, are there plans to do so? if so approximately when will it be ready?

[Dreeseaw]

Hello, the project currently supports the ability to snapshot a collection into a file and then restore the file into an in-memory collection. It also supports change-log streaming, which could be used to implement your own custom persistence method (the changes can then be replayed to a collection).

I can't speak fully on behalf of the project, but I do believe that keeping column focused on the in-memory implementation and letting the user implement their own persistence solution via snapshotting and/or change streaming is a good approach for now.