Building a running race app presents unique challenges, particularly around ensuring data arrives in the correct order to maintain fairness in race results. While GenServers are invaluable for synchronizing data streams, they can become bottlenecks if not managed properly. Testing such systems adds another layer of complexity, often requiring extensive setup to test individual modules. This talk explores these challenges in depth, sharing real-world examples and practical solutions to streamline development and testing in such intricate systems.

Join us in the Remote journey from a handful of engineers to >120 backend engineers working within an Elixir monolith with more than 2 million lines of code. You will understand how we scaled our development process, the hard-earned lessons we got, and the improvements we had to make to get here. This talk aims to describe the growth path of our Elixir monolith, the patterns that served us well and the hard-earned lessons that we got along the way. During this time, our monolith allowed us to a single main product to a multi-product.

gen_statem is one of the most powerful, yet least celebrated, behaviours in OTP. It handles infinite states, offers a rich set of event options, and provides robust debugging tools—all while staying true to OTP principles and functional programming. This talk is where you find out a lot more about this little module (possibly too much). Learn what gen_statem can do, when to use it, and when a silly GenServer does it instead.

Consuming data and processing it is a central problem in so many systems nowadays. And Elixir is just so good at doing that, and doing it concurrently. Whether you run an event-sourced architecture with applications that react to events, or you have the occasional use case of map/reducing over collections in an optimized way, Elixir has your back! In this half-day workshop, we will cover tools like Broadway, GenStage, and Flow to handle tasks such as batch processing, event-driven systems, and rate-limiting outgoing requests.

Over the past 10 years, Elixir has seen incredible growth. Together, we'll explore some of the key moments in Elixir's evolution, and look at the underlying design and community decisions that shaped it into what it is today.

In this session, you'll learn an overview of Elixir programming techniques. You'll learn Elixir using LiveBook, a quick and expressive way to capture both code and notes to collaborate on graphical applications. One piece at a time, we will use Elixir to write a small game using functional programming. Then, if there is time, we'll make the game fault tolerant and reliable with Elixir's concurrency framework called OTP.

This talk explores how modern AI tools can bridge the gap between developers and adopters, transforming documentation into an interactive, continuously improving resource. Focusing on Retrieval-Augmented Generation (RAG) in Elixir, it highlights how RAG can enhance both the creation and interaction with documentation, making it more engaging and effective. Attendees will learn about core RAG principles, handling fuzzy code searches, and mitigating security risks, offering a roadmap for small teams to create impactful documentation that supports growth and adoption.

In this talk, we’ll explore the architecture that powers the seamless deployment of Livebook apps with just a click of a button. This system combines a hybrid approach with an app running on localhost, a SaaS layer, and an on-premises app. We’ll examine how these distributed system components interact, the challenges they address, and how Elixir’s OTP is leveraged to make it all work.

Discover how we built a real-time helpdesk with Elixir to route critical conversations to the right operators instantly. This talk dives into smart routing, leveraging GenServers, and using tech to drive social impact—transforming code into meaningful connections for those in need.

Saša's talk is called "Tell me a story".

He didn't provide us with an abstract at all.

Not only have we decided to trust him, we are maybe even more excited for his time on our stage. You should be too.

This workshop will help you maximize the value you can get out of your tests in real-life collaborative Elixir projects. You’ll learn practical strategies to write clear, reliable tests and increase confidence in your code. This very interactive and hands-on session focuses on testing Phoenix-powered Elixir web servers, involving a lot of coding and discussions.This tutorial teaches a practical testing approach which maximizes the value you can get out of your tests in real-life collaborative Elixir projects. You’ll learn how to increase the confidence in your tests, organically maximize code coverage, and improve the test clarity. This is going to be a very interactive and hands-on session involving a lot of coding and discussions.

Navigating the tech landscape as a woman comes with unique challenges and opportunities. “From Code to Leadership: Navigating the Tech Landscape as a Woman” offers a comprehensive guide to career growth, leadership development, and the impact of diversity in technology. This presentation provides practical advice for women aspiring to transition from technical roles to leadership positions, emphasizing the importance of continuous learning, mentorship, and building a personal brand.

Let’s embark on a journey together - a journey in which we’ll weave together the realms of basketball, fiction writing, game development and trading card games to explore how these seemingly unrelated domains surprisingly intersect with the world of software development, offering fresh perspectives and insights.

As developers we often work with standardized formats and have functions to encode/decoded them. For example, we have Date.to_iso8601 + Date.from_iso8601, JSON.encode! + JSON.decode, NimbleTOTP.verification_code + NimbleTOTP.valid?, etc. I'd call these libraries symmetrical, they can work with either end of the format. We also work with network protocols like HTTP and for example we have: Req, an HTTP client, and Bandit, an HTTP server. Req and Bandit, even though they implement the common standard, HTTP, share almost no code and have different data structures. Why? Perhaps there are opportunities for symmetry?

Igniter is a project patching and code generation framework for Elixir. It allows us to seamlessly install and upgrade our packages. By leveraging AST-based code patching, library authors can provide intelligent installer and upgraders, massively improving the developer experience for getting started with a new Elixir tool. The talk delves into Igniter's capabilities, exploring from basic to advanced use cases, its impact on developer experience, and its potential to transform the way we work with our Elixir applications every day.

This full-day workshop introduces the Ash Framework, a tool for building maintainable and scalable Elixir applications. Ash Framework is a refreshingly different way to craft efficient and maintainable Elixir applications. In this hands-on, interactive course, we’ll dive deep into Ash’s capabilities, exploring how it can streamline your development process and enhance your application’s architecture. Throughout this class, we’ll build a real-world application from the ground up, leveraging Ash’s unique features.