rails中的ActiveJob和sidekiq

• 首先要先安装redis服务器端

sudo apt-get install redis-server

# 检查Redis服务器系统进程
~ ps -aux|grep redis
redis     4162  0.1  0.0  10676  1420 ?        Ss   23:24   0:00 /usr/bin/redis-server /etc/redis/redis.conf
conan     4172  0.0  0.0  11064   924 pts/0    S+   23:26   0:00 grep --color=auto redis

# 通过启动命令检查Redis服务器状态
~ netstat -nlt|grep 6379
tcp        0      0 127.0.0.1:6379          0.0.0.0:*               LISTEN

# 通过启动命令检查Redis服务器状态
~ sudo /etc/init.d/redis-server status
redis-server is running

• 安装好redis后，就可以安装sidekiq了

gem 'sidekiq'

配置Active Job adapter

class Application < Rails::Application
  # ...
  config.active_job.queue_adapter = :sidekiq
end

• 运行sidkiq
  在app的根目录下

bundle exec sidekiq

• 一切准备好后，就可以用ActiveRecord Job了

rails g job Prac
#invoke  test_unit
#create    test/jobs/prac_job_test.rb
#create  app/jobs/prac_job.rb

prac_job.rb中

class PracJob < ActiveJob::Base
  queue_as :default

  def perform(string)
    #do something in there
    #order = Order.first
    #order.user_name = string
    #order.save
  end
end

• 在model和controller中调用job

# PracJob.perform_later("prac001")马上运行job
# PracJob.set(wait: 30.second).perform_later("prac002")30秒后运行job
# PracJob.set(wait_until: Time.new(2015,7,1,20,45,00)).perform_later("prac003")直到2015-7-1 20：45：00运行job