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  - Dyno Management
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Command Line

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Continuous Delivery & Integration
- Continuous Integration

Language Support
- Node.js
  - Working with Node.js
  - Troubleshooting Node.js Apps
  - Node.js Behavior in Heroku
- Ruby
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  - Working with Ruby
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  - Troubleshooting Ruby Apps
- Python
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  - Working with Django
- Java
  - Java Behavior in Heroku
  - Working with Java
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  - Working with Spring Boot
  - Troubleshooting Java Apps
- PHP
  - Working with PHP
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- Go
  - Go Dependency Management
- Scala
- Clojure
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Databases & Data Management
- Heroku Postgres
  - Postgres Basics
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  - Postgres Performance
  - Postgres Data Transfer & Preservation
  - Postgres Availability
  - Postgres Special Topics
- Heroku Key-Value Store
- Apache Kafka on Heroku
- Other Data Stores

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- Logging

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Add-ons
- All Add-ons

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Security
- App Security
- Identities & Authentication
  - Single Sign-on (SSO)
- Compliance

Heroku Enterprise
- Private Spaces
  - Infrastructure Networking
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- Heroku Connect (Salesforce sync)
  - Heroku Connect Administration
  - Heroku Connect Reference
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Patterns & Best Practices

Extending Heroku
- Platform API
- App Webhooks
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  - Add-on Development Tasks
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- Building CLI Plugins
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Accounts & Billing

Troubleshooting & Support

Integrating with Salesforce

Default Ruby version for new apps is now 3.1.2

Change effective on 25 July 2022

The default Ruby version for new Ruby applications is 3.1.2. You’ll only get the default if the application does not specify a ruby version.

JDK 18.0.2, 17.0.4, 15.0.8, 13.0.12, 11.0.16, 8u342, and 7u352 now available PostgreSQL 14 is now the default for all database plans