Thinking Elixir 258: CVEs, MCPs, and Petabyte Dreams

Episode 258 of Thinking Elixir. News includes the first CVE released under EEF’s new CNA program for an Erlang zip traversal vulnerability, Phoenix MacroComponents being delayed for greater potential, Supabase announcing Multigres - a Vitess-like proxy for scaling Postgres to petabyte scale, a surge of new MCP server implementations for Phoenix and Plug including Phantom, HermesMCP, ExMCP, Vancouver, and Excom, a fun blog post revealing that Erlang was the only language that didn’t crash under extreme load testing against 6 other languages, LiveDebugger v0.3.0 being teased with Firefox extension support and enhanced debugging capabilities, and more!

https://www.youtube.com/watch?v=DsVyY4XHVm8

🚨 Less than 5 days left to submit your talk idea for Code BEAM Europe 2025! 🚨

We’re on the hunt for bold, brilliant talks around:

🧠 AI & ML in BEAM 🚀 Growth & Adoption strategies 🔧 Real-World Usage stories 🌱 Scalability & Sustainability solutions ✨ Gleam in Production insights

Got an idea? Now’s the time. Share it with the BEAM community before it’s too late! https://sessionize.com/code-beam-europe-2025/

Why you should use Ash?

You might want to choose Ash for your next Project! Read now to learn more!! https://devcarrots.com/blog/why-you-should-use-ash/

Updates to Permit and Permit.Phoenix, announcing Permit.Absinthe

We’ve just published a new article about the latest updates to Permit – authorization library for Elixir.In the article, Michał, our CTO expands on the topic he presented at ElixirConf EU and explains how Permit helps manage access control in Elixir projects.

👉 https://curiosum.com/sl/q01mxf82

Did contexts kill Phoenix?

https://arrowsmithlabs.com/blog/did-contexts-kill-phoenix

Implement multi-game instance architecture

review this PR

https://github.com/matheuscamarques/snooker_game_ex/pull/4

Cheat sheet: Gleam for Elixir users

https://gleam.run/cheatsheets/gleam-for-elixir-users/ Explore differences and similarities between Elixir and Gleam:

  • Comments
  • Variables
  • Functions
  • Modules
  • Operators
  • Constants
  • Blocks
  • Data types
  • Patterns
  • Custom types

Phoenix 1.8 Gets Official Security Documentation

Phoenix 1.8.0-rc was released in March 2025 to much excitement in the Elixir community. Highlights included daisyUI, enhancements to phx.gen.auth, and scopes to ensure strong access control. Given the security improvements in the first release candidate, it seems appropriate that the final release of Phoenix 1.8 will include official security documentation.

https://paraxial.io/blog/phoenix-security-docs

Phoenix contexts are simpler than you think

A lot of Phoenix beginners get confused by contexts. They’re not sure what contexts are, how to use them, or what their contexts should be called.

In my new post I explain contexts as simply as possible. It shouldn’t be difficult, because contexts are, in fact, very simple! The confusion, I think, comes from people overthinking things, and trying to understand contexts as something more complicated than they actually are.

Check out the explanation: https://arrowsmithlabs.com/blog/phoenix-contexts-are-simpler-than-you-think

MQSummit Call for Papers has been extended to July 6th

Thanks for the amazing submissions! 🎉 We’re extending the #MQSummit Call for Papers to July 6 - more time to share your story. Don’t miss out! 🚀 #CallForPapers https://mqsummit.com/#cft

Thinking Elixir 257: Runtime Intelligence and MCP Servers

Episode 257 of Thinking Elixir. News includes Elixir v1.19.0-rc.0 with significant type checking improvements and faster compile times, Gleam v1.11.0 delivering 30% faster JavaScript performance, the new Elixir Outreach stipend program providing funding for speakers to present at non-Elixir conferences, a batch of ElixirConf US 2024 videos featuring talks were published, the open-sourcing of Noora design system for Phoenix LiveView, upcoming support for “for” comprehensions in HEEX templates, and José Valim’s announcement of Tidewave - the groundbreaking MCP server that gives AI agents runtime access to your Elixir applications rather than just static code, and more!

https://www.youtube.com/watch?v=vzJmanHLxnY

🎉 Early Bird tickets for Code BEAM Europe 2025 are now live!

Join 350+ attendees for 2 days, 5 tracks, and 50+ speakers. Limited-time special pricing available now! 🚀 https://codebeameurope.com/#register

Elixir Adoption Guide - Ebook Out Now!

Hey there! The new free Elixir Adoption Guide ebook, premiered at ElixirConf EU 2025 in limited physical print, is out to the public now. Written with evangelizing Elixir in mind, it’s a resource to share with your boss who hesitates, your recruiter who struggles to screen candidates, and your friend who’s still stuck in OOP. Enjoy the read!

Feature: Concurrency mode FinanceChain

A financial API built with Elixir and Phoenix, leveraging blockchain principles and OTP (Open Telecom Platform) for concurrency and fault tolerance.

https://github.com/matheuscamarques/finance_chain

Telejogo is a terminal-based application that recreates the classic two-player Pong experience.

Telejogo is a terminal-based application that recreates the classic two-player Pong experience. The project is built on Erlang/OTP principles, making it robust, concurrent, and fault-tolerant.

https://github.com/matheuscamarques/telejogo_erl

Update on SnookerGameEx

Update on SnookerGameEx I’ve just added two new features to my open-source snooker game:

  • Added rotations for more dynamic and realistic gameplay
  • Added rolling behavior for smoother ball movement

Check it out and feel free to contribute or leave feedback: https://github.com/matheuscamarques/snooker_game_ex

Look ma, I have 20 million available oban jobs!

🚨 We hit 20 million Oban jobs in available state!

In our latest blog post, I dive into:
What caused the spike and why available jobs kept accumulating
How we resolved it using:

  • Oban Pro’s ChunkWorker
  • Postgres reindexing + VACUUM ANALYZE
  • Manual SQL to throttle job flow
  • Oban Web’s batch job controls

Plus insights on job argument versioning, queue misconfigurations, and proactive Oban monitoring

Huge thanks to Shannon & Parker Selbert for both building an incredible tool and supporting us live at DORS/CLUC 2025 in Zagreb 🇭🇷

🔗 Read the full story: https://lnkd.in/dHfGbMMe

Let me know if you’ve faced similar challenges — would love to compare notes!

html2text — fast, readable HTML to text via Rust NIF

GitHub: https://github.com/fuelen/html2text/

Snooker game built with the Elixir + LiveView + Nx

SnookerGameEx is a real-time multiplayer snooker game built with the Phoenix Framework and Elixir.

https://github.com/matheuscamarques/snooker_game_ex

Nx Actor-Oriented Architecture in Elixir for Simulating Concurrent Elastic Collisions

Simulation: https://www.youtube.com/shorts/BizYeUibc7A

Github Code: https://github.com/matheuscamarques/collision_simulator_ex

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