Gemfile

# frozen_string_literal: true

source "https://rubygems.org"

gem "sidekiq-scheduler"

sidekiq.yml

:scheduler:
  :schedule:
    hello_world:
      cron: '0 * * * * *'   # Runs once per minute
      class: HelloWorld

test.rb

require 'sidekiq-scheduler'

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

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

class HelloWorld
  include Sidekiq::Worker

  def perform
    puts "hello, world @#{Process.pid}"
  end
end

test.sh

#!/bin/sh

bundle exec sidekiq -C sidekiq.yml -r ./test.rb