How to set mongodb 'read concern' in a Meteor app?


In a Meteor app, how should the MongoDB read concern be set? I would like to set this flag on a case-by-case basis (not at the connection level).

I have been unable to answer this question using Google. A pointer to the appropriate documentation may be all I need.

‘Read concern’ is described here:

I don’t see anything like this in the Meteor docs:

Any help is appreciated.



You may find something useful with rawDatabase.


Or with Mongo.Collection#rawCollection

Give it a test and let us know if it works


We set readPreference in the MONGO_URL, so I would think that you could do the same with readConcern.

Our MONGO_URL looks like: