是Rails的“delayed_job”对于cron任务真的吗？ [英] Is Rails's "delayed_job" for cron task really?

问题描述

delayed_job位于 http://github.com/collectiveidea/delayed_job

delay_job能否执行cron任务？例如每天凌晨1点运行一个脚本。或每1小时运行一个脚本。

如果没有，什么是合适的宝石可以做到吗？可以使用浏览器远程监控，并记录成功和错误吗？

解决方案

使用DelayedJob安排未来的项目。

a href =http://github.com/javan/whenever =nofollow noreferrer> http://github.com/javan/whenever

每当是一个Ruby gem，它提供了一个
清除语法来定义cron作业。
它输出有效的cron语法，并可以
甚至为你写crontab文件。
它设计为与Rails
应用程序一起使用，并且可以与
Capistrano一起部署。

代码看起来像这样（来自github）

每3.hours做
runMyModel.some_process
rakemy：rake：task
command usr / bin / my_great_command
end

每1.day，：at => '4:30 am'do
runnerMyModel.task_to_run_at_four_thirty_in_the_morning
end

every：hour do＃许多快捷键可用：：hour，：day，：month，：year ，：reboot
runnerSomeModel.ladeeda
end

every：sunday，：at => '12pm'do＃使用一周中的任何一天或：周末，：weekday
runnerTask.do_something_great
end


这里RailsCast视频

以及相应的 ASCIICast 。

delayed_job is at http://github.com/collectiveidea/delayed_job

Can delayed_job have the ability to do cron task? Such as running a script every night at 1am. Or run a script every 1 hour.

If not, what are the suitable gems that can do that? And can it be monitored remotely using a browser, and have logging of success and error?

解决方案

I worked on a project that tried to use DelayedJob to schedule future items. It sucked.

Instead I recommend you use the whenever gem:

http://github.com/javan/whenever

Whenever is a Ruby gem that provides a clear syntax for defining cron jobs. It outputs valid cron syntax and can even write your crontab file for you. It is designed to work well with Rails applications and can be deployed with Capistrano. Whenever works fine independently as well.

Code looks like this (from github)

  every 3.hours do
    runner "MyModel.some_process"
    rake "my:rake:task"
    command "/usr/bin/my_great_command"
  end

  every 1.day, :at => '4:30 am' do
    runner "MyModel.task_to_run_at_four_thirty_in_the_morning"
  end

  every :hour do # Many shortcuts available: :hour, :day, :month, :year, :reboot
    runner "SomeModel.ladeeda"
  end

  every :sunday, :at => '12pm' do # Use any day of the week or :weekend, :weekday
    runner "Task.do_something_great"
  end

Here's a RailsCast video on how to use it.

And the corresponding ASCIICast.

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