Monkey patch to rate limit Rails Exception Notification / Notifier

gistfile1.rb

ExceptionNotifier::Notifier.class_eval do
  #https://github.com/smartinez87/exception_notification/blob/master/lib/exception_notifier/notifier.rb
  def self.exception_notification(*args)
    message = super
    
    _limit = 5.minutes.ago
    @@last_notification||=_limit 
    if @@last_notification > _limit
      Rails.logger.info "ExceptionNotifier rate limit triggered, #{ExceptionNotifier::Notifier.deliveries.size} notifications limited."
      message.delivery_method :test
    else
      @@last_notification = Time.now
    end
    
    message
  end
end

You can do same logic in config.ignore_if