Basic Sidekiq config

application.rb

# config/application.rb
# ...
module FooApp
  class Application < Rails::Application
    # ...
    config.active_job.queue_adapter = :sidekiq
    # ...
  end
end

application_job.rb

# app/jobs/application_job.rb

class ApplicationJob < ActiveJob::Base
end

sidekiq.rb

# config/initializers/sidekiq.rb
require 'sidekiq'

Sidekiq.configure_server do |config|
  config.redis = { url: "redis://#{ENV.fetch('DATA_REDIS_HOST') { 'localhost' }}:6379/1" }
end

Sidekiq.configure_client do |config|
  config.redis = { url: "redis://#{ENV.fetch('DATA_REDIS_HOST') { 'localhost' }}:6379/1" }
end

if Rails.env.development?
  require 'sidekiq/testing'
  Sidekiq::Testing.inline!
end

sidekiq.yml

# config/sidekiq.yml
:concurrency: <%= ENV.fetch('SIDEKIQ_CONNECTIONS') { 25 } %>
:queues:
  - [critical, 2]
  - mailers
  - default

test_job.rb

# app/jobs/test_job.rb

class TestJob < ApplicationJob
  queue_as :critical

  def perform(user_id:)
    user = User.find(user_id)
    user.do_something if user
  end

end

USAGE.md

Starting Sidekiq

bundle exec sidekiq -C config/sidekiq.yml

Perform Job Immediately

TestJob.perform_now(user_id: current_user.id)

Enqueue Jobs

TestJob.perform_later(user_id: current_user.id)

Enqueue a Job to Run 1 Week From Now

TestJob.set(wait: 1.week).perform_later(user_id: current_user.id)