Heroku Cloud Application Development

Using the Heroku scheduler

It is easy to set up a keep-alive dyno ping using the Heroku scheduler. If you are a Ruby developer, you can create a rake task as follows, for an automated ping to your web dyno:

1. Write the following script:

   desc "Pings YOUR_HEROKU_APP_URL to keep a dyno alive"
       task :wakeup_dyno do
         require "net/http"
   
         if ENV['YOUR_HEROKU_APP_URL']
           uri = URI(ENV['YOUR_HEROKU_APP_URL'])
           Net::HTTP.get_response(uri)
         end
   end

2. Add YOUR_HEROKU_APP_URL to your Heroku environment:

   $ heroku config:add YOUR_HEROKU_APP_URL=https://yourherokuapp.herokuapp.com
   

3. Now, set up the Heroku scheduler:

   $ heroku addons:add scheduler:standard
   $ heroku addons:open scheduler
   

   That last command should open the scheduler interface in your browser.

4. Set up your wakeup_dyno ...