Demystifying Elixir Web App Development: A Comprehensive Introduction

August 17, 2023

Idhaya M V

Demystifying Elixir Web App Development: A Comprehensive Introduction

What is Elixir? 

Elixir is a dynamic programing language with a syntax that combines a wild blend of influences for more scalable and stable programming. Elixir combines the best features of Ruby, the superpowers of Erlang, and the functional elegance of other languages. 

Elixir’s beginnings trace back to 2011, when José Valim, a talented programmer, introduced a language that has since captivated the developer community. Valim wanted a language that could leverage the scalability and fault tolerance of Erlang, but with a modern twist. 

Few facts about Elixir 

  1. According to the annual Stack Overflow Developer Survey in 2022, Elixir was ranked as the second most loved programming language by developers globally. 
  2. In a benchmark test conducted by the TechEmpower Web Framework Benchmarks, Elixir with the Phoenix framework ranked among the top performers in terms of request throughput, showcasing its ability to handle high traffic loads with efficiency.
  3. WhatsApp, a widely used messaging application, uses Erlang (upon which Elixir is built) for its robustness and scalability. 

Why choose Elixir for web development?

“True fame is not attained through mere popularity, but through the impact and usefulness of one’s contributions.” – Paulo Coelho

The advantages of Elixir are many. They include:    

  • Concurrency and Fault-Tolerance: Elixir’s approach to concurrency is based on lightweight processes, often called actors. Each process operates independently and communicates through message passing. This minimizes the impact of failures, improving reliability. 
  • Functional Programming: Elixir embraces functional programming, which includes principles like immutability and pure functions. This focus on functional programming results in code that is easy to reason about, test, and maintain. Elixir also provides powerful abstractions, such as pattern matching, which enables expressive and concise code.  
  • Code Efficiency: Elixir’s expressive syntax enables developers to achieve more with less code. The language’s concise nature eliminates unnecessary boilerplate code, allowing developers to focus on the core logic of their applications. Using Elixir promotes cleaner codebases that are easier to understand and maintain. 
  • Security & Safety: Elixir provides built-in mechanisms for dealing with common security vulnerabilities, such as process isolation and strict immutability. Elixir’s approach to concurrency also ensures that resources are managed safely and efficiently, minimizing the risk of data corruption or unauthorized access. 
  • Scalability: Elixir’s key strengths are its ability to handle high traffic and rapid growth.  With its lightweight processes and built-in support for distributed computing, Elixir enables horizontal scalability. Horizontal scalability allows apps to be scaled across multiple machines.  
  • Productivity and Maintainability: The language promotes a clear and readable coding style, reducing cognitive overhead and making it easier to understand and modify existing code. Elixir’s comprehensive toolset, including testing frameworks, documentation generators, and code formatters, further improves developer productivity by simplifying common tasks and providing a solid foundation for maintaining code quality and consistency. 

Pros and Cons of Elixir for Web Development: 


  • Performance: Elixir’s lightweight processes and efficient message passing mechanism contribute to its exceptional performance. 
  • Erlang Virtual Machine (BEAM): Elixir uses the battle-tested reliability and fault-tolerance of the BEAM runtime, allowing developers to build fault-tolerant web applications that can handle unexpected failures. 
  • Phoenix Framework: The Phoenix web framework, built with Elixir, offers advantages such as speed, real-time capabilities, and a clean codebase. 
  • Ecosystem and Community Support: Elixir boasts a vibrant ecosystem with a wide range of libraries and frameworks that improve productivity and extend the capabilities of Elixir applications. The active community behind Elixir provides excellent support, resources, and collaboration opportunities for developers. 
  • Simplicity: Elixir’s clean and expressive syntax, inspired by Ruby, promotes code readability and maintainability. Its focus on simplicity makes it easier for developers to understand and work with the language. 
  • Performance: Elixir’s performance benefits, coupled with its efficient use of system resources, contribute to fast and responsive web applications. Elixir’s ability to handle high traffic and concurrent requests without sacrificing performance makes it a preferred choice for building scalable and high-performance systems. 


  • Learning Curve: Elixir introduces functional programming concepts and syntax, which may require developers to learn new paradigms and adjust their coding style. The initial learning curve can be steep, particularly for developers more familiar with imperative or object-oriented languages. 
  • Limited Talent Pool: Compared to more widely adopted languages, such as JavaScript or Python, the pool of experienced Elixir developers may be relatively smaller. 
  • Limited IDE and Tooling Support: Elixir’s tooling and integrated development environment (IDE) support might not be as extensive as those available for more popular languages. While there are capable tools like Mix and the ElixirLS language server, the range of options might be more limited, requiring developers to adapt to different workflows. 
  • Maturity Comparison: Elixir, while promising, is relatively younger than well-established languages like .NET and Java. This difference in maturity is reflected in the depth of available libraries, frameworks, and resources, potentially making certain tasks more intricate or time-consuming for Elixir developers. 

It’s worth noting that while these cons exist, they can often be overcome through effective team training and leaning on the support of the enthusiastic Elixir community. 

Elixir Development: Versatile Applications and Use Cases 

  1. Real-time Applications: Elixir’s concurrency model and lightweight processes make it ideal for building real-time applications that require instant data updates and fast response times. Examples include chat applications, collaborative tools, and live streaming platforms like

    Discord, WhatsApp, Pinterest, and Twitch. 

  2. Data-Intensive Applications: Elixir’s ability to handle large volumes of data and its fault-tolerant nature make it suitable for data-intensive applications. Examples include data analytics platforms like


    , data processing pipelines, and recommendation systems.

  3. Gaming and Interactive Systems: Elixir’s low latency and real-time capabilities make it well-suited for developing multiplayer online games, game servers, and interactive systems.

    Albion and Smite

  4. Fintech Solutions: Elixir’s reliability, fault-tolerance, and scalability make it a strong choice for building fintech applications that require high security and real-time processing. An example is the payment platform “Braintree” used by companies like

    Airbnb and Uber.

  5. IoT and Embedded Systems: Elixir’s small footprint and ability to handle concurrent connections make it suitable for IoT devices and embedded systems.

    Nerves Project and FarmBot

  6. Streaming and Multimedia Applications: Elixir’s concurrency and real-time capabilities make it a good choice for building streaming platforms, media servers, and multimedia applications. This includes the streaming platform “Mux” used by companies like

    Vimeo and PBS.

  7. Distributed Systems: Elixir’s built-in support for distributed computing enables the development of scalable and fault-tolerant distributed systems. Examples include distributed messaging systems like

    RabbitMQ, Bleacher Report, and Pager Duty.

  8. Web Applications: Elixir’s web framework Phoenix allows for the development of high-performance and scalable web applications. Examples include platforms like

    Discord and Moz 

  9. Data Processing and Analysis: Elixir’s ability to handle concurrent tasks and compatibility with data processing libraries make it useful for building data processing and analysis applications. An example is the data processing platform


    used for time-series data analysis.

  10. Telecommunications and Voice-over-IP (VoIP) Systems: Elixir’s high concurrency and low latency make it well-suited for building telecommunication systems and VoIP applications. Examples include

    MongooseIM, Twilio, and Zoom.

  11. Microservices Architecture: Elixir’s scalability and fault-tolerance make it a suitable choice for developing microservices-based architectures. Examples include platforms like

    Bleacher Report and Bleacher Buddy

    which leverage Elixir for their microservices infrastructure.

  12. Blockchain and Cryptocurrency Applications: Elixir’s ability to handle concurrent tasks and its fault-tolerant design make it suitable for building blockchain-based applications and cryptocurrency systems.  A few crypto platforms that leverage the benefits of Elixir are

    Komodo, VeChain, and Steemit

    These are just a few examples of projects that can leverage Elixir development. The language’s versatility, scalability, fault tolerance, and high performance make it applicable to a wide range of industries and use cases.  

Seize the Summit! 

Imagine trying to climb Mount Everest without a seasoned guide. Sure, you might have a map and some basic climbing skills, but the odds of successfully reaching the summit are slim. That’s where Eleviant comes to the rescue, where we don our Elixir guide hats and lead you to the pinnacle of success.  

So, whether you’re a startup or an established business ready to level up your web applications, we’re happy to guide you through the process. Eleviant’s Elixir web development services can help you conquer the digital realm.


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