Cracking the PubSub Code. Elixir's Key to Scalable Real-Time Systems | Code BEAM America 2025

[CodeSync]

Cracking the PubSub Code. Elixir’s Key to Scalable Real-Time Systems | Code BEAM America 2025

Cracking the PubSub Code. Elixir's Key to Scalable Real-Time Systems | Code BEAM America 2025

This talk was recorded at Code BEAM America in March 2025. If you’re curious about our upcoming event, check https://codebebeamamerica.com

This talk explores the inner workings of PubSub and its crucial role in building scalable, fault-tolerant, and real-time systems.

It begins with an introduction to the Publisher/Subscriber pattern, highlighting how it decouples services and facilitates efficient message broadcasting in distributed architectures.

The session then delves into Phoenix.PubSub, showing how it powers real-time features in LiveView and handles clustering across multiple nodes.

Two hands-on examples will demonstrate PubSub in action: a GenServer broadcasting state across nodes using libCluster, and real-time updates between LiveComponents and LiveView.

Perfect for Elixir developers looking to master PubSub and build resilient, scalable applications.

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