```ruby
class UpdateClinicalTrials < ActiveJob::Base
  def perform(recurring = true)
    begin
      Source.where(source_type: 'PubMed').each do |source|
        resp = Scrapers::PubMed.call_pubmed_api(source.citation_id)
        clinical_trials = resp.clinical_trial_ids.uniq.map do |nct_id|
          ClinicalTrial.where(nct_id: nct_id).first_or_create
        end
        source.clinical_trials = clinical_trials
        source.save
        sleep 0.1
      end
    ensure
      reschedule if recurring
    end
  end

  def reschedule
    self.class.set(wait_until: next_week).perform_later
  end

  def next_week
    Date.today
      .beginning_of_week
      .next_week
      .midnight
  end
end
```

Increase sleep to half a second
user
```ruby
class UpdateClinicalTrials < ActiveJob::Base
  def perform(recurring = true)
    begin
      Source.where(source_type: 'PubMed').each do |source|
        resp = Scrapers::PubMed.call_pubmed_api(source.citation_id)
        clinical_trials = resp.clinical_trial_ids.uniq.map do |nct_id|
          ClinicalTrial.where(nct_id: nct_id).first_or_create
        end
        source.clinical_trials = clinical_trials
        source.save
        sleep 0.5
      end
    ensure
      reschedule if recurring
    end
  end

  def reschedule
    self.class.set(wait_until: next_week).perform_later
  end

  def next_week
    Date.today
      .beginning_of_week
      .next_week
      .midnight
  end
end
```
assistant