rails periodic task

Question

I have a ruby on rails app in which I\'m trying to find a way to run some code every few seconds.

I\'ve found lots of info and ideas using cron, or cron-like implementat

Answer 1

I know it is an old question. But maybe for someone this answer could be helpful. There is a gem called crono.

Crono is a time-based background job scheduler daemon (just like Cron) for Ruby on Rails.

Crono is pure Ruby. It doesn't use Unix Cron and other platform-dependent things. So you can use it on all platforms supported by Ruby. It persists job states to your database using Active Record. You have full control of jobs performing process. It's Ruby, so you can understand and modify it to fit your needs.

The awesome thing with crono is that its code is self explained. In order to do a task periodically you can just do:

Crono.perform(YourJob).every 2.days

Maybe you can also do:

Crono.perform(YourJob).every 30.seconds

Anyway you really can do a lot of things. Another example could be:

Crono.perform(TestJob).every 1.week, on: :monday, at: "15:30"

I suggest this gem instead of whenever because whenever uses Unix Cron table which not always is available.