Former Apple employee here. They’ve been using it extensively in production for years. Pretty much all of CloudKit is run using FDB for storage. Public source

Former Apple employee here. They’ve been using it extensively in production for years. Pretty much all of CloudKit is run using FDB for storage. Public source for that info, so I don’t get accused of NDA violations - https://youtu.be/HLE8chgw6LI https://youtu.be/HLE8chgw6LI Timestamp 14:15 touches on CloudKit’s extensive FDB usage.