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Continuous Delivery
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- PHP
- Go
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- Scala
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Databases & Data Management
- Heroku Postgres
  - Postgres Basics
  - Postgres Performance
  - Postgres Data Transfer & Preservation
  - Postgres Availability
  - Postgres Special Topics
- Heroku Redis
- Apache Kafka on Heroku
- Other Data Stores

Monitoring & Metrics
- Logging

App Performance

Add-ons
- All Add-ons

Collaboration

Security
- App Security
- Identities & Authentication
- Compliance

Heroku Enterprise
- Private Spaces
  - Infrastructure Networking
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- Heroku Connect (Salesforce sync)
  - Heroku Connect Administration
  - Heroku Connect Reference
  - Heroku Connect Troubleshooting
- Single Sign-on (SSO)

Patterns & Best Practices

Extending Heroku
- Platform API
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  - Add-on Development Tasks
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  - Add-on Guidelines & Requirements
- Building CLI Plugins
- Developing Buildpacks
- Dev Center

Accounts & Billing

Troubleshooting & Support

PHP 5.5.16 now available

Change effective on 22 August 2014

PHP version 5.5.16 is now available on Heroku and is the default stable runtime version unless a different version is explicitly selected.

JRuby 1.7.14 now available Heroku Postgres Legacy Infrastructure Deprecation