If you have nested counters in a document you have always specify the full path to update them.

update(

{id:1}

, {
'some.path.into1' : 1,
'some.path.into2' : 1,
})

this quickly becomes quite verbose. Using a document for this would feel natural.

update(

{id:1}

, { '$inc': { 'some' : { 'path' :

{ 'into1' : 1, 'into2' : 1, }}

}})

the increment would be on all leaf nodes that are of type int