You remember right - I think you might be referring to this issue: https://groups.google.com/forum/#!topic/google-api-go-announce/79jtrdeuJAg https://groups.goo

You remember right - I think you might be referring to this issue: https://groups.google.com/forum/#!topic/google-api-go-announce/79jtrdeuJAg https://groups.google.com/forum/#!topic/google-api-go-announ... > the cloud datastore package will default to writing your nested structs as entity values, while the appengine datastore packages will only write your nested structs as flattened sets of attributes. Other than that, there are no differences. (GCP Gopher)