Wristwatch

Need to run timer-based tasks, but you have no control over your cron? Heroku's hourly cron got you puzzled? Wristwatch is here to help.

Tell it what to do in config/wristwatch_jobs.rb, and which intervals to use, and Wristwatch does the rest:

hourly "Flush unsent emails" do
  Notifier.flush_unsent
end

daily "Reindex Solr" do
  Rake::Task['sunspot:reindex'].execute
end

daily "Send reminder emails" do
  Notifier.remind_users_to_call_mom
end

Wristwatch gives you lots of basic intervals to play with:

• hourly
• bi-hourly
• quarter-hourly
• bi-daily
• daily
• weekly
• bi-monthly
• monthly

and so on. See intervals.rb for details, and re-open it to add your own task triggers.

Wristwatch will add a cron.rake task if you're using Rails, which should make it easy to plug in to Heroku's hourly cron.

Wristwatch relies on hourly resolution, so daily cron probably won't trigger the :daily task. For best results, run cron.rake hourly.

Full configuration, logging, increased resolution and more. Stay tuned!

(The MIT License)

Copyright © 2011 (Scott Burton, ChaiOne)