Ruby，延迟作业，延迟：后端：Activerecord

Question

我正在使用像 Something.delay.some_function() 这样的延迟作业
我正在运行 [Foreman][1] Procfile 来启动 rails server 和 worker

web: bundle exec rails s
worker:  bundle exec rake jobs:work

而且我一直在终端中看到这个，虽然我总是运行 rake 作业：如果在工作期间发生了不好的事情，请清除。现在我没有延迟的工作了

irb(main):010:0> Delayed::Job.all
  Delayed::Backend::ActiveRecord::Job Load (0.7ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" 
=> []

但我仍然在终端中看到那些奇怪的东西。这是什么，我怎样才能摆脱它？

11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (0.1ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:52.491892' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:52.492124') OR locked_by = 'host:kik-VirtualBox pid:5010') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (0.5ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:52.706307' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:52.706499') OR locked_by = 'host:kik-VirtualBox pid:4654') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (0.4ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:52.712781' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:52.713010') OR locked_by = 'host:kik-VirtualBox pid:4313') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (4.8ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:52.710021' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:52.710261') OR locked_by = 'host:kik-VirtualBox pid:4622') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (0.5ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:54.530083' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:54.530318') OR locked_by = 'host:kik-VirtualBox pid:5307') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (0.6ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:57.497068' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:57.497275') OR locked_by = 'host:kik-VirtualBox pid:5010') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (0.5ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:57.723823' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:57.724071') OR locked_by = 'host:kik-VirtualBox pid:4313') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (0.4ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:57.722732' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:57.722934') OR locked_by = 'host:kik-VirtualBox pid:4654') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (10.0ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:57.718190' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:57.718443') OR locked_by = 'host:kik-VirtualBox pid:4622') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5
11:47:01 rails_s.1     |   Delayed::Backend::ActiveRecord::Job Load (0.5ms)  SELECT "delayed_jobs".* FROM "delayed_jobs" WHERE ((run_at <= '2013-06-14 09:46:59.534770' AND (locked_at IS NULL OR locked_at < '2013-06-14 05:46:59.535003') OR locked_by = 'host:kik-VirtualBox pid:5307') AND failed_at IS NULL) ORDER BY priority ASC, run_at ASC LIMIT 5

提前致谢

Answer 1

Delayed Job 每隔一段时间检查是否有新任务。只要rake jobs:work 正在运行，您就会看到这些日志。简而言之 - 一切正常！