mongoose save or update

// This will create another document if it doesn't exist
findByIdAndUpdate(_id, { something: 'updated' }, { upsert: true });

var conditions = { name: 'bourne' } 
  , update = { $inc: { visits: 1 }}

Model.update(conditions, update, { multi: true }).then(updatedRows=>{
  
}).catch(err=>{
  console.log(err)
  
})