Memory-Safe “top tags” aggregation with pluck + group

                  class Tags::Top
  def call(limit: 20)
    ActsAsTaggableOn::Tagging
      .where(taggable_type: 'Snip')
      .group(:tag_id)
      .order(Arel.sql('COUNT(*) DESC'))
      .limit(limit)
      .count
  end
end