Distribute a large Sidekiq job across many smaller ones

worker.rb

class ProcessThings
  include Sidekiq::Worker
  
  def perform(ids: Thing.ids)
    ids.each(&Individual.method(:perform_async))
  end
  
  class Individual
    include Sidekiq::Worker
    
    def perform id
      thing = Thing.find(id)
      
      # process the individual thing
    end
  end
end