调度一个工作每分钟Rails 3.1在Heroku [英] scheduling a job every minute Rails 3.1 on Heroku

问题描述

我希望每分钟在Heroku上运行一个任务，检查是否满足某些用户任务超时的条件。我只能每小时运行一次Heroku cron作业，所以什么是最好的方式来设置一个这样的定时任务。我在Heroku上使用了Rails 3.1。

I want to run a task every minute on Heroku to check if conditions are met to time-out certain user tasks. I can only run a Heroku cron job every hour, so what's the best way to set up a timed task like this. I am using Rails 3.1 on Heroku.

推荐答案

您可以使用 delayed_job 与具有：run_at 的自重新启动作业。类似这样的东西：

You could use delayed_job with a self-restarting job with a :run_at. Something sort of like this:

class YourJob
    def do_interesting_things
        #... Do what needs to be done.
        self.delay(:run_at => 1.minute.from_now).do_interesting_things
    end

    def self.start_me_up
        new.do_interesting_things
    end
end

然后在应用程序初始化期间的某个地方：

And then somewhere during your application's initialization:

YourJob.start_me_up

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