单次 schedule 用 enqueue_at

https://github.com/bvandenbos/resque-scheduler#description

Resque.enqueue_at(5.days.from_now, SomeJob) # run SomeJob at a specific time

循环任务建议用 whenever gem

@cqpx 是循环任务，不过要在后台运行，因为执行时间长，是个爬虫，whenever 没后台执行吧？！如果把他写在配置文件里呢？应该怎么写？

clear_leaderboards_moderator:
  every: ["30s", :first_in => '120s']
  class: CheckDaemon
  queue: daemons
  description: "This job will check Daemon every 30 seconds after 120 seconds after start"

https://github.com/bvandenbos/resque-scheduler#description

文档里有

queue_documents_for_indexing:
  cron: "0 0 * * *"
  # you can use rufus-scheduler "every" syntax in place of cron if you prefer
  # every: 1hr
  # By default the job name (hash key) will be taken as worker class name.
  # If you want to have a different job name and class name, provide the 'class' option
  class: QueueDocuments
  queue: high
  args:
  description: "This job queues all content for indexing in solr“

楼主搜下 crontab 的写法就懂了。