Really curious to get more info on that file format. Seems like it’s structured as a database and has internal addressing schemes and embedded caching structure

Really curious to get more info on that file format. Seems like it’s structured as a database and has internal addressing schemes and embedded caching structures to allow for partial IO. The idea of persistent history implies that it records changes as events, which is a good fit for an LSM. In any case it must be a container format, as an LSM alone would not suffice, perhaps it could be a filesystem volume disguised as a file with Apple specific tech behind it.