Mongoose 4.x "model.update()" callback changed
Yes, they are the same thing. According to the 4.0 release notes:
#2552: Upgraded mongodb driver to 2.0.x. Mongoose is a wrapper layer on top of the MongoDB node driver. The mongodb driver recently released version 2.0, which includes numerous performance and usability improvements. The new driver, however, introduces a few changes that affect the way you use Mongoose:
- If you are connecting to a replica set, you must specify the
replicaSetoption in the connection string.updatereturns a result object from the MongoDB server, rather than just the number affected. The second parameter to the callback will now look like{ ok: 1, n: 3 }rather than simply the number affected.