```ruby
namespace :yossarian do
  desc 'Get festivals'
  task festivals: :environment do
    Lastfm::Events.factory = Yossarian::EventFactory

    Lastfm::Events.get(location: :europe, festivalsonly: 1, limit: 100)
  end

  desc 'Get artists'
  task artists: :environment do
    Lastfm::Artist.factory = Yossarian::ArtistFactory

    Artist.where(lastfm_url: nil).find_each do |artist|
      Lastfm::Artist.get(artist: artist.name) rescue nil
    end
  end

  desc 'Get youtube videos'
  task youtube: :environment do
    Recording.find_each do |recording|
      Yossarian::RecordingFactory.update_from_youtube(recording.id)
    end
  end

  desc 'Clean data for production'
  task clean: :environment do
    Recording.where(youtube_url: nil).each(&:destroy!)
    Artist.where(image: nil).each(&:destroy!)
  end
end
```

Add cleanup task for data
user
```ruby
namespace :yossarian do
  desc 'Get festivals'
  task festivals: :environment do
    Lastfm::Events.factory = Yossarian::EventFactory

    Lastfm::Events.get(location: :europe, festivalsonly: 1, limit: 100)
  end

  desc 'Get artists'
  task artists: :environment do
    Lastfm::Artist.factory = Yossarian::ArtistFactory

    Artist.where(lastfm_url: nil).find_each do |artist|
      Lastfm::Artist.get(artist: artist.name) rescue nil
    end
  end

  desc 'Get youtube videos'
  task youtube: :environment do
    Recording.find_each do |recording|
      Yossarian::RecordingFactory.update_from_youtube(recording.id)
    end
  end

  desc 'Clean data for production'
  task clean: :environment do
    Recording.where(youtube_url: nil).each(&:destroy!)
    Artist.where(image: nil).each(&:destroy!)

    Event.find_each do |event|
      if event.performances.count > 20
        id = event.performances.order(:id).first(20).last.id

        event.performances.where('id > ?', id).each(&:destroy!)
      end
    end

    Artist.find_each do |artist|
      if artist.recordings.count > 10
        id = artist.recordings.order(:id).first(10).last.id

        artist.recordings.where('id > ?', id).each(&:destroy!)
      end
    end
  end
end
```
assistant