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  - Working with Node.js
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Databases & Data Management
- Heroku Postgres
  - Postgres Basics
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- Heroku Key-Value Store
- Apache Kafka on Heroku
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Extending Heroku
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Troubleshooting & Support

Integrating with Salesforce

Default Ruby version for new apps is now 2.5.5

Change effective on 25 June 2019

The default Ruby version for new Ruby applications is 2.5.5. You’ll only get the default if the application does not specify a ruby version.

Default Kafka version is now 2.2 Ruby apps now default to Node version 10.15.3 and Yarn version 1.16.0