One of dropboxs major advanteges is delta sync, that means only changed parts are transmitted and if someone else uplaoded the file before then you do not have to upload the file because Dropbox just links to that server-side file, correct?
If so I wonder how these advanced features are reflected in the Dropbox API? When I look at https://dropbox.github.io/dropbox-api-v2-explorer/#files_upload then the full file is send to the web server. If I browse the API, no function name contains the word "delta" or "sync".
A brief google search lets me find hits only from ~ 2012, so they are referencing the old API....
