What is Heroku?

Heroku is a cloud platform service that supports several programming languages. It’s a flexible, easy-to-use platform that allows developers to deploy, manage, and scale modern applications. Heroku is one of the first cloud platforms and it has been in development since June 2007 when it initially supported only the Ruby programming language, but now it supports Java, Node.js, Scala, Clojure, Python, PHP, and Go.

Key Features of Heroku

  • Scalability: Heroku allows developers to scale their applications instantly, either by increasing the number of dyno instances or by upgrading the dyno type.
  • Extensibility: With Heroku’s Add-on system, it extends its services to include components such as New Relic, MongoDB, SendGrid, Searchify, Fastly, Papertrail, ClearDB MySQL, Treasure Data, and many others.
  • Dataclips: Dataclips allow the results of SQL queries on a database to be easily shared. It’s simply an amazing tool for data export and reporting.
  • Heroku CLI: The Heroku Command Line Interface (CLI) makes it easy to create and manage your Heroku apps directly from the terminal. It’s an essential part of using Heroku.

How Does Heroku Work?

Heroku lets you deploy, run, and manage applications written in Ruby, Node.js, Java, Python, Clojure, Scala, Go, and PHP. To do this, Heroku uses the concept of ‘dynos’ – which are isolated, virtualized Linux containers designed to execute code based on user-specified commands.


Deploying applications on Heroku is done using Git. Developers can directly push their code into the Heroku git repository from where it gets deployed. Heroku also supports Docker-based deployments.

Running Applications:

Heroku executes the application by running a command specified in the Procfile. The Procfile is a simple text file that tells Heroku how to start your application.

Managing Applications:

Heroku provides a Dashboard from where you can manage your applications, resources, and addons. It also allows you to monitor the performance of your application and provides you with useful insights.

Why Choose Heroku?

Heroku simplifies the process of deployment and running of applications. It provides a fully managed runtime environment, handles server maintenance and network issues, and provides seamless integration with other AWS services. This allows developers to focus on coding, instead of getting bogged down with the complexities of server management and deployment. Heroku also has a strong community of developers and a marketplace of add-ons which further extends its functionality.

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