whenever

whenever 定时任务（sidekiq 为异步任务） https://github.com/javan/whenever

其他技术博客参考
http://blog.youkuaiyun.com/vito0705/article/details/52932014

Whenever is a Ruby gem that provides a clear syntax for writing and deploying cron jobs.

$ gem install whenever

# Or with Bundler in your Gemfile.
gem 'whenever', :require => false

# Getting started
$ cd /apps/my-great-project
$ wheneverize .whenever

# schedule.rb

every 1.day, :at => '2:30 am' do
  rake "app:unfreeze_earnings"
end

every 12.hours do
  rake "app:reward_inviter"
end

every 4.hours do
  rake "app:read_order"
end