Batching vs all for build_event_occurrences

[devilankur18]

Here is the sample code I thinking off for this. Please give your suggestions. This also includes unique occurrences by adding index to db.

  def self.build_event_occurrences
    # build occurrences for all events
    # TODO: only invalid events
    schedulables = self
    # schedulables.each do |schedulable|

    schedulables = schedulables.includes(:schedule)

    schedulables.find_each(batch_size: 100) do |schedulable|
      begin
        schedulable.build_event_occurrences
      rescue ActiveRecord::RecordNotUnique
        # Ignore it
        next
      rescue Exception => ex
        throw ex
      end
    end
  end