With [GridFS|http://docs.mongodb.org/manual/core/gridfs/] MongoDB provides a way for storing arbitrary binary files. We might use it to store "overflows" of large entities , e . g. it'd likely be a good fit
We opted for byte arrays using a specific type to represents fields that need to be stored uinsg GridFS. It looks like :
{code}
@ Lob
@BinaryStorage GridFSBucket ( GRID_FS "photos" ) // Advices the dialect to store the data separately and only a pointer in the entity document
private byte[] picture GridFS gridfs ;
{code}
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