Heroku 上的 Rails 3.1 每分钟安排一个作业 [英] scheduling a job every minute Rails 3.1 on Heroku

问题描述

我想每分钟在 Heroku 上运行一个任务，以检查是否满足某些用户任务超时的条件.我每小时只能运行一个 Heroku cron 作业，那么设置这样的定时任务的最佳方法是什么.我在 Heroku 上使用 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

您可以将 delayed_job 与自重启作业一起使用一个 :run_at.有点像这样:

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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