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rails--rails/activejob/CHANGELOG.md
Anthony Ross 5f7621878d Add jitter to :exponentially_longer 
Prior to this change, exponentially_longer had adverse consequences
during system-wide downstream failures.  This change adds a random value to the
back off calculation in order to prevent the thundering herd
problem, whereby all retry jobs would retry at the same time.

Specifically this change adds a jitter option to retry_on to enable users of it to
scope the randomness calculation to a reasonable amount.  The default is
15% of the exponential back off calculation.
2019-11-27 16:03:11 -08:00

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  • Add an option to disable logging of the job arguments when enqueuing and executing the job.

    class SensitiveJob < ApplicationJob
  self.log_arguments = false

  def perform(my_sensitive_argument)
  end
end

    When dealing with sensitive arguments as password and tokens it is now possible to configure the job to not put the sensitive argument in the logs.

    Rafael Mendonça França

  • Changes in queue_name_prefix of a job no longer affects all other jobs.

    Fixes #37084.

    Lucas Mansur

  • Allow Class and Module instances to be serialized.

    Kevin Deisz

  • Log potential matches in assert_enqueued_with and assert_performed_with.

    Gareth du Plooy

  • Add at argument to the perform_enqueued_jobs test helper.

    John Crepezzi, Eileen Uchitelle

  • assert_enqueued_with and assert_performed_with can now test jobs with relative delay.

    Vlado Cingel

  • Add jitter to :exponentially_longer

    ActiveJob::Exceptions.retry_on with :exponentially_longer now uses a random amount of jitter in order to prevent the thundering herd effect.. Defaults to 15% (represented as 0.15) but overridable via the :jitter option when using retry_on. Jitter is applied when an Integer, ActiveSupport::Duration or exponentially_longer, is passed to the wait argument in retry_on.

    retry_on(MyError, wait: :exponentially_longer, jitter: 0.30)

    Anthony Ross

Please check 6-0-stable for previous changes.