posted 10 years ago
I suppose it depends on how you want to use the object once it's in MongoDB. You certainly can choose to just shove everything into a GridFS "file", but you lose query-ability (a GridFS file should be treated like a BLOB would be in a RDBMS).
If the object is over 70MB and you don't want to decompose it structurally, you are going to need to store it in GridFS, since MongoDB documents are limited to 16MB each.
Hope that helps!