Mongo/BSON and compression question

[moores]

I have a large document (20-30KB) where one field contains nested data making up about 80% of the data in a document. I'd like to use GZIP compression on this one field, and do it somehow with Spring MongoDB mapping.

So basically, I'd like to convert this complex field to a String, manually marshal with BSON and GZIP it, and then set the value on the document. It's a nested field that is a GZIPed chunk of BSON.

This would reduce the size of my database, preventing me from considering sharding.

Just looking at the MappingMongoConverter code a bit- maybe that can be used manually?

--Michael