Creating Erlang Releases

When you develop an Erlang application, it's a collection of modules and configuration files. To deploy it, you need to package it all up.

An Erlang Release is a self-contained, deployable package of your application, its dependencies, and optionally, a specific version of the Erlang Runtime System (ERTS).

• It's like a standalone executable for your Erlang system.
• It simplifies deployment by bundling everything needed to run.

Why go through the effort of creating a release? Releases offer significant advantages for production systems:

• Self-contained: Includes all necessary Erlang libraries and even the Erlang VM itself.
• Simplified Deployment: Just copy the release folder to a server and start it.
• Version Management: Each release has a clear version number, making upgrades and rollbacks easier.
• Foundation for Live Upgrades: Releases are essential for Erlang's famous 'hot code loading' feature (covered in a later lesson!).