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Artwork for BEAM There, Done That

BEAM There, Done That

Plangora
Elixir
Beam
Erlang
TV Labs
Rust
Ash Framework
Phoenix
Native Records
Concurrency
Prolog
Sonic Pi
Durableserver
Groxio
Actor Model
Multiplayer Games
Multi-Core
Just-In-Time Compiler
Crdts
Local First
Robert Virding

BEAM There, Done That is a podcast about building real systems with Elixir, Erlang, and the BEAM. We’ve built it before — distributed systems, fault‑tolerant services, event pipelines, real‑time apps, production nightmares, and the supervision trees that saved them. Each episode dives into practical lessons from shipping software on the BEAM: architecture decisions, scaling challenges, operational... more

PublishesWeeklyEpisodes20Founded5 months ago
Number of ListenersCategory
Technology

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Artwork for BEAM There, Done That

Latest Episodes

Everyone who's ever written a C NIF for the BEAM knows the story. You have a bottleneck, you reach for native code, it works - until one day it doesn't, and instead of a process crashing, the whole node goes down. A segfault in a NIF takes the entire... more

In 2021, Erlang got something it had been promised for years: a Just-In-Time compiler. The person who built the first working prototype, spent years on failed experiments before it, and quietly shipped it to every Erlang and Elixir system on the plan... more

Joe Armstrong once said anyone can write a type system covering 90% of Erlang — it's the remaining 10% that defeats even the brightest minds in computer science. He was referring to Philip Wadler. That was 1995. Thirty years later, the BEAM is finall... more

Three engineers. Three different virtual machines. One conversation that started with the JAM and ends with the JIT compiler.

Allen Wyma and Francesco Cesarini sit down again with Björn Gustafsson — member of the OTP team since 1996, and the person ... more

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Recent Guests

Björn Gustafsson
Member of the OTP team since 1996; shepherded the BEAM through major transitions
Ericsson
Episode: 30 Years Inside the BEAM: Björn Gustafsson on Building Erlang's Runtime
Chris Beck
Engineer and founder of Bitcrowd, expert on building scalable social data planes
Bitcrowd
Episode: Why Elixir Beat Go and Rust for BlueSky's Data Plane | Chris Beck
Ellyse Cedeno
Technology and product leader with 25+ years in online games, distributed systems, and real-time platforms
Episode: Why Multiplayer Games Are Just Distributed Systems | Ellyse Cedeno on BEAM & the Actor Model
Bruce Tate
Author of Seven Languages in Seven Weeks; co-author of multiple Elixir/Erlang books; founder of Groxio
Groxio
Episode: Who Builds the Next Generation of Senior Devs? Bruce Tate on AI, Juniors, and the Career Path Crisis
Peter Ullrich
Senior developer who found five CVEs in one afternoon; ElixirConf EU presenter
ElixirConf/Ellixir
Episode: AI Found 5 CVEs in One Afternoon — The BEAM Security Wake-Up Call | Peter Ullrich & Jonathan Machen
Jonathan Machen
Chief Information Security Officer, Erlang Ecosystem Foundation
Erlang Ecosystem Foundation
Episode: AI Found 5 CVEs in One Afternoon — The BEAM Security Wake-Up Call | Peter Ullrich & Jonathan Machen
Björn Gustavsson
Key contributor to BEAM internals and native records
BEAM OTP team / Ericsson legacy
Episode: Inside the BEAM: Björn Gustavsson on Maps, Records, and Runtime Design
Chris McCord
Creator of Elixir's Phoenix Framework
Fly.io
Episode: Phoenix’s Next Evolution: Chris McCord Unveils the DurableServer
Dave Lucia
CTO and co-founder of TV Labs
TV Labs
Episode: Bridging Hardware-as-a-service with Elixir: Inside TV Labs’ Platform With Dave Lucia and Paulo Valente

Hosts

Francesco Cesarini
Host of BEAM There Done That
Alan Wyman
Host of BEAM There, Done That

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts
#171
Finland/Technology
Apple Podcasts
#192
Sweden/Technology
Apple Podcasts
#197
Hong Kong/Technology
Apple Podcasts
#222
Mexico/Technology

Talking Points

Recent interactions between the hosts and their guests.

30 Years Inside the BEAM: Björn Gustafsson on Building Erlang's Runtime
Q: What was the major turning point for BEAM when moving from single-core to multi-core?
The multi-core transition required introducing locking and later refining it with fine-grained locks, which dramatically improved scalability and performance, while maintaining backward compatibility and safe hot code loading.
Why Multiplayer Games Are Just Distributed Systems | Ellyse Cedeno on BEAM & the Actor Model
Q: Why hasn't the broader games industry adopted actor-model thinking sooner?
The industry often relies on homegrown tech and game engines where the client and server run largely the same code, and Unreal/Unity ecosystems focus on a client-centric model. Transitioning to BEAM would require rethinking the server language and architecture, which adds complexity though the benefits are substantial.
Why Multiplayer Games Are Just Distributed Systems | Ellyse Cedeno on BEAM & the Actor Model
Q: What are the biggest challenges in synchronizing state across regions?
Synchronization across regions is tricky when servers dynamically repartition during high load. The key is to hand off responsibility without players noticing, using careful messaging protocols and region boundaries to ensure consistent world state and seamless transitions.
Why Multiplayer Games Are Just Distributed Systems | Ellyse Cedeno on BEAM & the Actor Model
Q: What changes when moving from threads to actors in game server design?
The shift to actors allows each entity (players, mobs, world regions) to operate as an independent process with its own state, accessed via message passing. This eliminates shared mutable state and locks, enabling deterministic handling of events and easier scalability as concurrency grows.
Why Multiplayer Games Are Just Distributed Systems | Ellyse Cedeno on BEAM & the Actor Model
Q: Tell us about your first gen server and how you approached learning Elixir.
Ellyse describes building a Discord bot with Nostrum as her first practical project in Elixir, using Google APIs for translation to enable cross-language communication. This initial gen server helped her learn the language and OTP concepts while solving a real-world need in a self-contained, manageable way.

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Frequently Asked Questions About BEAM There, Done That

What is BEAM There, Done That about and what kind of topics does it cover?

The show centers on building real, scalable systems on BEAM (Elixir and Erlang) with a strong emphasis on practical, battle-tested lessons. Episodes frequently cover architecture decisions, fault tolerance, concurrency patterns, and real-world production challenges, often featuring engineers who contribute to BEAM ecosystems or lead major projects (frameworks, runtimes, tooling, and platform-scale deployments). A standout theme is the balance between leveraging the BEAM's reliability and embracing modern needs like AI, security, and multi-region deployments, all through candid conversations, concrete anecdotes, and actionable guidance for engineers and managers alike. The lineup tends toward deeply technical discussions with guests who are ... more

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Which podcasts are similar to BEAM There, Done That?

These podcasts share a similar audience with BEAM There, Done That:

1. Thinking Elixir Podcast
2. Elixir Wizards
3. CoRecursive: Coding Stories
4. Practical AI
5. Oxide and Friends

How many episodes of BEAM There, Done That are there?

BEAM There, Done That launched 5 months ago and published 20 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on BEAM There, Done That?

Recent guests on BEAM There, Done That include:

1. Björn Gustafsson
2. Chris Beck
3. Ellyse Cedeno
4. Bruce Tate
5. Peter Ullrich
6. Jonathan Machen
7. Björn Gustavsson
8. Chris McCord

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