What to use to do an action every minute?

Depends on what you mean: if you want to update the user’s browser every minute when a certain page is loaded, you can use a periodical updater. If it’s a background process, you can use a cron tab and use “script/runner”, i.e. if it calculating values in the background without any visual feedback.

Best regards

Peter De Berdt

http://wiki.rubyonrails.org/rails/pages/HowToRunBackgroundJobsInRails

Best regards

Peter De Berdt