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

Command Line

Deployment
- Deploying with Git
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Continuous Delivery & Integration
- Continuous Integration

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

Monitoring & Metrics
- Logging

App Performance

Add-ons
- All Add-ons

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

Heroku Enterprise
- Enterprise Accounts
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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
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- Building CLI Plugins
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- Dev Center

Accounts & Billing

Troubleshooting & Support

Integrating with Salesforce

Platform API now has rate-limits endpoint

Change effective on 13 August 2013

The Platform API now has a rate limit endpoint that can be used to check the current account rate limit. Requests to the rate limit endpoint do not count towards the account rate limit.

See the Platform API Dev Center section for additional details.

Feature endpoints for Platform API Add-ons now reference a plan ID in the Platform API