Mongoose: Read on ReplicaSet

Question

I have a mongodb replica set from which I want to read data from primary and secondary db.

I have used this command to connect to the db:

mongoose.con

Answer 1

Mongoose use node package "mongodb", connection uri or opts is parsed by "mongodb". Here is mongodb connect opts and mongodb readPreference source code.

So, we can use mongoose like this:

var opts = {db: {readPreference: 'nearest'}; mongoose.connect(uri, opts);

Also, just use uri like this:

var uri = 'mongodb://###?readPreference=nearest'; mongoose.connect(uri, opts);

In mongoose 4.3.4 above take effect.