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Categories

Heroku Architecture
- Compute (Dynos)
  - Dyno Management
  - Dyno Concepts
  - Dyno Behavior
  - Dyno Reference
  - Dyno Troubleshooting
- Stacks (operating system images)
- Networking & DNS
- Platform Policies
- Buildpacks
- Platform Principles

Developer Tools
- Command Line
- Heroku VS Code Extension

Deployment
- Deploying with Git
- Deploying with Docker
- Deployment Integrations

Continuous Delivery & Integration (Heroku Flow)
- Continuous Integration

Language Support
- Node.js
  - Troubleshooting Node.js Apps
  - Working with Node.js
  - 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
  - PHP Behavior in Heroku
  - Working with PHP
- 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
- Working with AI
- Heroku Inference
  - Inference Essentials
  - AI Models
  - Heroku Inference Quick Start Guides
  - Inference API
- Tool Use
- Vector Database
- AI Integrations

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

PHP updates - April 2025 (Cedar)

Change effective on 11 April 2025

The following new PHP runtime versions are now available:

The following PHP extensions have been added or updated:

ext-grpc 1.71.0 (for heroku-22 and heroku-24 stacks and PHP 8.1 or later)
ext-imagick 3.8.0
ext-mongodb 1.21.0 (compatible with PHP 8.1 or later)
ext-mongodb 2.0.0 (compatible with PHP 8.1 or later)
ext-newrelic 11.7.0.21
ext-phalcon 5.9.2
ext-redis 6.2.0

The following new Composer versions are now available for use during builds:

Composer 2.8.8

These changes apply to the Cedar generation and not to the Fir generation of the Heroku platform.

Ruby version 3.4.3 is now available Heroku-20, Heroku-22 and Heroku-24 stacks updated