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Elixir

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May 11, 2024 Updated July 12, 2025 14 minute read

Elixir is a modern, functional programming language that has gained popularity in recent years for its concurrency, scalability, and fault tolerance. It is designed to run on the BEAM virtual machine, which provides a number of features that make it well-suited for building distributed systems, such as automatic memory management, hot code loading, and a distributed task scheduler.

What is Elixir Used For?

Elixir is a versatile language that can be used for a wide variety of purposes, including:

  • Web development: Elixir is a popular choice for building web applications, thanks to its Phoenix framework, which provides a number of features that make it easy to build scalable, high-performance web applications.
  • Concurrency: Elixir's concurrency features make it well-suited for building applications that need to handle a large number of concurrent requests.
  • Fault tolerance: Elixir's fault tolerance features make it well-suited for building applications that need to be highly available and reliable.
  • Data processing: Elixir's data processing features make it well-suited for building applications that need to process large amounts of data.

Why Learn Elixir?

There are a number of reasons why you might want to learn Elixir, including:

Path to Elixir

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We've curated eight courses to help you on your path to Elixir. Use these to develop your skills, build background knowledge, and put what you learn to practice.
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Reading list

We've selected 31 books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Elixir.
Considered a must-read for developers looking to build robust, scalable, and fault-tolerant systems with Elixir and the Erlang VM. dives into the core of the platform, covering OTP in detail. It's suitable for those with some programming experience, even if new to functional programming or Elixir.
Is an excellent starting point for experienced programmers new to Elixir and functional programming. It covers the core concepts of the language, including functional programming paradigms, concurrency, and the Mix build tool. It's widely recommended as a foundational text.
Comprehensive guide to the Elixir programming language, covering everything from basic syntax to advanced topics such as concurrency and OTP. It is written by a team of experienced Elixir developers and valuable resource for anyone who wants to learn more about the language.
Focuses on Phoenix LiveView, a library for building interactive web interfaces with Elixir without writing extensive JavaScript. It's highly relevant for contemporary Elixir web development and is suitable for developers with some Phoenix experience.
For those interested in web development with Elixir, this book cornerstone for learning the Phoenix framework. It guides readers through building a web application, covering controllers, views, templates, Ecto for database interactions, and real-time features with channels. While based on an older version, the core concepts remain relevant.
Delves deeper into designing and building applications using OTP. It focuses on architectural patterns and principles for creating maintainable and scalable Elixir systems. It's best suited for those who have a solid understanding of Elixir basics and are ready to tackle more complex application design.
Offers a gentle introduction to Elixir and OTP, making it suitable for those with some programming background but new to the Elixir ecosystem. It focuses on getting started quickly with practical examples and understanding how OTP helps build scalable applications.
Practical guide to Elixir programming, written by two of the most respected authors in the software development community. It covers a wide range of topics, from basic syntax to advanced techniques, and great resource for anyone who wants to learn more about Elixir.
Focuses on building real-time web applications using Phoenix Channels. is relevant for developers looking to implement features like chat, notifications, and live updates in their applications.
Goes beyond the technical aspects of Elixir and discusses the practicalities of introducing and using Elixir in a professional environment. It covers team building, project management, and deployment strategies, making it valuable for professionals and teams considering adopting Elixir.
Is tailored for web developers familiar with other frameworks and introduces them to building web applications with Phoenix, the popular Elixir web framework. It covers the unique benefits of Phoenix and provides practical examples for building production-quality web apps.
Delves into building concurrent data processing pipelines in Elixir using libraries like GenStage, Flow, and Broadway. It's for developers who need to handle and process large amounts of data concurrently and efficiently.
Ideal for individuals new to functional programming. focuses on teaching the functional mindset using Elixir as the vehicle. It covers fundamental functional concepts and Elixir features, making it a good prerequisite or supplementary read for beginners.
Guide to web development with Elixir, OTP, and Phoenix. It covers a wide range of topics, from basic routing to advanced features such as authentication and authorization. It valuable resource for anyone who wants to learn more about Elixir web development and how to use OTP and Phoenix to build robust and scalable web applications.
Teaches how to build a stateful web application using Elixir, OTP, and Phoenix, emphasizing a functional approach. It covers building the backend business logic separately from the web interface.
A comprehensive guide to testing Elixir applications. It covers various testing techniques and tools within the Elixir ecosystem, essential for building reliable software. Suitable for all levels of Elixir developers who want to improve their testing practices.
Focuses on Ecto, the database library for Elixir. It covers connecting Elixir and Phoenix applications to databases, Ecto fundamentals, and advanced topics for building scalable and performant database applications. It's essential for developers working with databases in Elixir.
Explores the powerful metaprogramming capabilities of Elixir using macros. It's for developers who want to understand how to write code that writes code, enabling the creation of domain-specific languages and extending the language's features. This is an advanced topic.
Guide to the Phoenix Framework for Elixir, written by two of the framework's creators. It covers a wide range of topics, from basic routing to advanced features such as authentication and authorization. It valuable resource for anyone who wants to learn more about Phoenix and how to use it to build web applications.
Focuses on test-driven development (TDD) in Elixir using its built-in testing frameworks, ExUnit and Doctest. It's a practical guide for writing robust and well-tested Elixir code, valuable for developers at all levels.
Guide to the Elixir programming language, written by an experienced Elixir developer. It covers a wide range of topics, from basic syntax to advanced topics such as concurrency and OTP. It valuable resource for anyone who wants to learn more about Elixir.
Delves into the principles and patterns for designing scalable systems using Erlang/OTP. It provides a deeper understanding of how to leverage the platform's capabilities for building highly available and fault-tolerant applications. Useful for experienced developers and architects.
While focused on Erlang, this free book is highly relevant to Elixir developers as it covers understanding and troubleshooting systems on the Erlang VM. It's valuable for preparing for production deployments and dealing with system failures.
Explores the implementation of genetic algorithms in Elixir, showcasing the language's capabilities for computational tasks. It's a more specialized topic, suitable for those interested in this specific area or looking to see Elixir applied to different problem domains.
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