The file body length is limited in 10Mb.
So how do you serve files over 10MB? For now, you don’t.
The size of all the file attributes together is limited in 64Kb. This includes key names but excludes any serialization overhead. For example, if you store the string attribute
foo="bar", it will count as 6 Bytes.
If you need more space, either store the data in the file’s body or in its children (files).