Wow, from the post: "Together, the Record Layer and FoundationDB form the backbone of Apple's CloudKit. We wrote a paper describing how we built the Record Lay

Wow, from the post: "Together, the Record Layer and FoundationDB form the backbone of Apple's CloudKit. We wrote a paper describing how we built the Record Layer to run at massive scale and how CloudKit uses it." I think this is the first time that little detail has been publicly disclosed.