Comments on: ★ Is Delayed Job :run_at => DateTime Giving You Fits? http://www.gregbenedict.com/2009/08/19/is-delayed-job-run_at-datetime-giving-you-fits/ Thoughts on the web and creativity. Sat, 16 Jul 2011 08:15:32 +0000 hourly 1 http://wordpress.org/?v=3.0.5 By: Christian http://www.gregbenedict.com/2009/08/19/is-delayed-job-run_at-datetime-giving-you-fits/comment-page-1/#comment-534 Christian Fri, 12 Nov 2010 08:23:39 +0000 http://www.gregbenedict.com/?p=114#comment-534 I went with this strategy and forgot to set DJ's maximum-attempts. It went out of controll with awful many jobs going bananas during the night due to an exception raised in each job:) I guess there are some trix to avoid this, delete other jobs before queue the next. Never run more then once. etc. I ended up with a solution where hourly cron schedules jobs for the next 12 hours, and maintain the job-queue and sees to that all jobs are present. So cron checks that there always are 720 jobs present, one for each minute.. Not a good solution eighter I think, a long queue for a simple task. Another strategy I found usefull is to setup a remote crontab doing curl against a middelware-url in my app on Heroku every minute. I went with this strategy and forgot to set DJ’s maximum-attempts. It went out of controll with awful many jobs going bananas during the night due to an exception raised in each job:) I guess there are some trix to avoid this, delete other jobs before queue the next. Never run more then once. etc. I ended up with a solution where hourly cron schedules jobs for the next 12 hours, and maintain the job-queue and sees to that all jobs are present. So cron checks that there always are 720 jobs present, one for each minute.. Not a good solution eighter I think, a long queue for a simple task. Another strategy I found usefull is to setup a remote crontab doing curl against a middelware-url in my app on Heroku every minute.

]]> By: Greg Benedict http://www.gregbenedict.com/2009/08/19/is-delayed-job-run_at-datetime-giving-you-fits/comment-page-1/#comment-530 Greg Benedict Tue, 12 Oct 2010 15:38:38 +0000 http://www.gregbenedict.com/?p=114#comment-530 Graeme, There are two steps that I do. The first is I create a rake task that adds the job to the queue. Delayed::Job.enqueue MyStruct.new() The second step is that I add a similar call at the bottom of the MyStruct perform() method. Delayed::Job.enqueue MyStruct.new(), 0, 1.minute.from_now.getutc Now this isn't programmatically ideal because it creates a new record every minute. But in practice, you won't max out an 11 digit integer field in the next 100 years. Graeme,

There are two steps that I do. The first is I create a rake task that adds the job to the queue.

Delayed::Job.enqueue MyStruct.new()

The second step is that I add a similar call at the bottom of the MyStruct perform() method.

Delayed::Job.enqueue MyStruct.new(), 0, 1.minute.from_now.getutc

Now this isn’t programmatically ideal because it creates a new record every minute. But in practice, you won’t max out an 11 digit integer field in the next 100 years.

]]> By: Graeme Simpson http://www.gregbenedict.com/2009/08/19/is-delayed-job-run_at-datetime-giving-you-fits/comment-page-1/#comment-529 Graeme Simpson Tue, 12 Oct 2010 14:56:29 +0000 http://www.gregbenedict.com/?p=114#comment-529 Hi Greg, I'm also trying to get heroku to run a task every minute. Could you tell me how you populated the delayed jobs table so that there was a task for every minute? Many thanks, Graeme Hi Greg,

I’m also trying to get heroku to run a task every minute. Could you tell me how you populated the delayed jobs table so that there was a task for every minute?

Many thanks,
Graeme

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