I’ve compiled a list of free add-ons available on Heroku, so I’ll introduce them.

Heroku Free Add-ons

Log Management: Papertrail

The log management service Papertrail can be used for free up to 10 MB/day.

• Papertrail - Add-ons - Heroku Elements

Papertrail Configuration | Ruby on Rails Edition

Papertrail configuration for Rails 5 is described in the following Heroku official documentation:

• Heroku gems | Getting Started with Rails 5.x on Heroku | Heroku Dev Center

Add the following log output destination and format settings to config/environments/production.rb to complete the Papertrail configuration:

# config/environments/production.rb
config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
if ENV["RAILS_LOG_TO_STDOUT"].present?
  logger           = ActiveSupport::Logger.new(STDOUT)
  logger.formatter = config.log_formatter
  config.logger = ActiveSupport::TaggedLogging.new(logger)
end

Alert Monitoring: Rollbar

• Rollbar - Add-ons - Heroku Elements

Rollbar Initial Setup

heroku addons:create rollbar:free

After adding the Rollbar add-on, you’ll receive an email stating that you can complete the initial setup within 5 minutes from “Codebase Integrations”, so proceed with the configuration.

Email Delivery: SendGrid

• SendGrid - Add-ons - Heroku Elements

Heroku's Free Convenient Features

Deploy Hooks

You can set up Deploy Hooks for free, which notify a specific URL when your app deployment to Heroku is complete. While this isn’t an add-on, it’s worth setting up.

• Deploy Hooks | Heroku Dev Center

If you have any “recommended Heroku add-ons,” please let me know.

That’s all from the Gemba.