# 示例：创建Active Job
class ProcessImageJob < ApplicationJob
  queue_as :default

  def perform(image_id)
    image = Image.find(image_id)
    image.process!
  end
end

# 调用
ProcessImageJob.perform_later(image.id)

# Gemfile
gem 'sidekiq'

# 配置
# config/initializers/sidekiq.rb
Sidekiq.configure_server do |config|
  config.redis = { url: 'redis://localhost:6379/0' }
end

# 创建worker
class ImageProcessorWorker
  include Sidekiq::Worker

  def perform(image_id)
    image = Image.find(image_id)
    image.process!
  end
end

# 调用
ImageProcessorWorker.perform_async(image.id)

# Gemfile
gem 'delayed_job_active_record'

# 创建任务
class Image
  def process_later
    delay.process
  end
end

# 调用
image.process_later

# Gemfile
gem 'resque'

# 创建worker
class ImageProcessor
  @queue = :image_processing

  def self.perform(image_id)
    image = Image.find(image_id)
    image.process!
  end
end

# 调用
Resque.enqueue(ImageProcessor, image.id)

# Sidekiq重试示例
class ImageProcessorWorker
  include Sidekiq::Worker
  sidekiq_options retry: 3 # 最多重试3次

  def perform(image_id)
    # ...
  end
end