How I know my document's size inside MongoDB with the ruby driver

Question

The limitation of one document in MongoDB is 4Mo. I have some documents really heavy with a lot of data.

How I know my document's size inside MongoDB with the ruby driver ?

Zack Bartel · Accepted Answer · 2011-06-29 17:41:40Z

28

Or native Object.bsonsize(db.Foo.findOne());

answered Jun 29, 2011 at 17:41

Zack Bartel

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2 Comments

+1 ! Can even size up the attribute of the document : Object.bsonsize(db.customer.findOne({'name' : 'harry'}).address);

Moreover, you can check size of any object: Object.bsonsize(ObjectId()), Object.bsonsize({ is_free: true }).

kristina · Accepted Answer · 2010-03-28 12:57:59Z

4

You can use BSON.serialize and find the length of the resulting byte buffer. See http://www.mongodb.org/display/DOCS/BSON#BSON-Ruby for an example of using BSON.serialize.

answered Mar 28, 2010 at 12:57

kristina

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So you can do it like this: BSON.serialize(database.collection(:collection_name).find_one(_id: BSON::ObjectId('4f8698bfc4eb9605a1000001'))).size