class ActiveJob::QueueAdapters::QueueClassicAdapter

Rails.application.config.active_job.queue_adapter = :queue_classic
To use queue_classic set the queue_adapter config to :queue_classic.
Read more about queue_classic here.
beanstalkd, 0mq) is undesirable.
production environment and that adding another dependency (e.g. redis,
queue_classic assumes that you are already using PostgreSQL in your
database load while providing a simple, intuitive developer experience.
queue. queue_classic specializes in concurrent locking and minimizing
queue_classic provides a simple interface to a PostgreSQL-backed message
== queue_classic adapter for Active Job

def build_queue(queue_name)

build_queue method.
ActiveJob::QueueAdapters::QueueClassicAdapter and override the
If you have a custom QC::Queue subclass you'll need to subclass

Builds a QC::Queue object to schedule jobs on.
def build_queue(queue_name)
  QC::Queue.new(queue_name)
end

def enqueue(job) #:nodoc:

:nodoc:
def enqueue(job) #:nodoc:
  qc_job = build_queue(job.queue_name).enqueue("#{JobWrapper.name}.perform", job.serialize)
  job.provider_job_id = qc_job["id"] if qc_job.is_a?(Hash)
  qc_job
end

def enqueue_at(job, timestamp) #:nodoc:

:nodoc:
def enqueue_at(job, timestamp) #:nodoc:
  queue = build_queue(job.queue_name)
  unless queue.respond_to?(:enqueue_at)
    raise NotImplementedError, "To be able to schedule jobs with queue_classic " \
      "the QC::Queue needs to respond to `enqueue_at(timestamp, method, *args)`. " \
      "You can implement this yourself or you can use the queue_classic-later gem."
  end
  qc_job = queue.enqueue_at(timestamp, "#{JobWrapper.name}.perform", job.serialize)
  job.provider_job_id = qc_job["id"] if qc_job.is_a?(Hash)
  qc_job
end