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Heroku Architecture
- Compute (Dynos)
  - Dyno Management
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- Stacks (operating system images)
- Networking & DNS
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- Buildpacks
- Platform Principles

Developer Tools
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Deployment
- Deploying with Git
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- Deployment Integrations

Continuous Delivery & Integration (Heroku Flow)
- Continuous Integration

Language Support
- Node.js
  - Working with Node.js
  - Troubleshooting Node.js Apps
  - Node.js Behavior in Heroku
- Ruby
  - Rails Support
    - Working with Rails
  - Working with Bundler
  - Working with Ruby
  - Ruby Behavior in Heroku
  - Troubleshooting Ruby Apps
- Python
  - Working with Python
  - Background Jobs in Python
  - Python Behavior in Heroku
  - Working with Django
- Java
  - Java Behavior in Heroku
  - Working with Java
  - Working with Maven
  - Working with Spring Boot
  - Troubleshooting Java Apps
- PHP
  - Working with PHP
  - PHP Behavior in Heroku
- Go
  - Go Dependency Management
- Scala
- Clojure
- .NET
  - Working with .NET

Databases & Data Management
- Heroku Postgres
  - Postgres Basics
  - Postgres Getting Started
  - Postgres Performance
  - Postgres Data Transfer & Preservation
  - Postgres Availability
  - Postgres Special Topics
  - Migrating to Heroku Postgres
- Heroku Key-Value Store
- Apache Kafka on Heroku
- Other Data Stores

AI
- Inference Essentials
- Inference API
- Inference Quick Start Guides
- AI Models
- Tool Use
- AI Integrations
- Vector Database

Monitoring & Metrics
- Logging

App Performance

Add-ons
- All Add-ons

Collaboration

Security
- App Security
- Identities & Authentication
  - Single Sign-on (SSO)
- Private Spaces
  - Infrastructure Networking
- Compliance

Heroku Enterprise
- Enterprise Accounts
- Enterprise Teams

Patterns & Best Practices

Extending Heroku
- Platform API
- App Webhooks
- Heroku Labs
- Building Add-ons
  - Add-on Development Tasks
  - Add-on APIs
  - Add-on Guidelines & Requirements
- Building CLI Plugins
- Developing Buildpacks
- Dev Center

Accounts & Billing

Troubleshooting & Support

Integrating with Salesforce
- Heroku AppLink
  - Working with Heroku AppLink
  - Heroku AppLink Reference
  - Getting Started with Heroku AppLink
- Heroku Connect (Salesforce sync)
  - Heroku Connect Administration
  - Heroku Connect Reference
  - Heroku Connect Troubleshooting
- Other Salesforce Integrations

OpenJDK 26 is now available for Java, Scala and Clojure apps

Change effective on 18 March 2026

Heroku’s support for Java, Scala and Clojure now includes support for OpenJDK version 26. To use this version of OpenJDK, create a system.properties file in your application with the following contents:

java.runtime.version=26

After your next deployment, Heroku will install and run your app with OpenJDK 26. For more information, see the article on Heroku Support for Java in the Dev Center. For more information on OpenJDK 26, see the official OpenJDK documentation.

Data Maintenance CLI commands are now in Heroku CLI PHP updates - March 2026