How would RethinkDB's real-time capabilities compare to doing something like this with Mongo? (I'm genuinely curious about any shortcomings with the following implementation, besides scaling.)

    // plugins/replicate.js

    var replicator = require('replicator');

    module.exports = exports = function replicatePlugin (schema, options) {
      schema.pre('save', function (next) {
        // notify subscribers of save
        replicator.notify('save', this);
        next();
      });
    }



    // schemas/game.js

    var replicatePlugin = require('../plugins/replicate.js');
    var GameSchema = new Schema({ ... });
    GameSchema.plugin(replicatePlugin);