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Databases & Data Management
- Heroku Postgres
  - Postgres Basics
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- Heroku Redis
- Apache Kafka on Heroku
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Monitoring & Metrics
- Logging

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Add-ons
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Security
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Heroku Enterprise
- Private Spaces
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Patterns & Best Practices

Extending Heroku
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Troubleshooting & Support

Platform API now supports running dynos with custom environment

Change effective on 13 September 2013

The API to run dynos now take env, a hash of custom environment variables to be added to that particular run.

Ruby 2.1.0 preview1 now supported on Heroku Platform API addon services and plans list `slug` ranges renamed to `name`