Show Notes online - http://podcast.thinkingelixir.com/296

Elixir Community News

• https://paraxial.io/ – Paraxial.io is sponsoring today's show! Sign up for a free trial of Paraxial.io today and mention Thinking Elixir when you schedule a demo for a special offer.
• https://x.com/josevalim/status/2029221739285057565 – José Valim announced Elixir v1.20.0-rc.2 and rc.3 on X. The compiler finds more bugs, is ~10% faster, has a new interpreted mode (up to 5x faster), and improves incremental compilation for struct changes.
• https://github.com/elixir-lang/elixir/releases/tag/v1.20.0-rc.2 – Release page for Elixir v1.20.0-rc.2.
• https://github.com/elixir-lang/elixir/releases/tag/v1.20.0-rc.3 – Release page for Elixir v1.20.0-rc.3, including a number of fixes and IEx autocomplete optimization.
• https://x.com/chris_mccord/status/2029630330630508929 – Chris McCord shared how the BEAM supports booting a :peer node as a VM within the VM, enabling "hot bluegreen" deploys on Fly.io — spinning up a new incoming VM and cutting over seamlessly while both peers stay clustered.
• https://hex.pm/packages/fly_deploy – Hex package page for fly_deploy, Chris McCord's new library for zero-downtime hot code upgrades on Fly.io without restarts.
• https://github.com/chrismccord/fly_deploy – GitHub repo for fly_deploy, which enables hot code upgrades for Elixir apps on Fly.io by suspending processes, swapping in new code, migrating state via code_change callbacks, and resuming — without downtime.
• https://hexdocs.pm/fly_deploy/FlyDeploy.html#module-limitations-vs-otp-releases – Documentation outlining the limitations of fly_deploy's hot deploy approach, such as inability to change supervision trees or application config.
• https://discord.com/blog/tracing-discords-elixir-systems-without-melting-everything – Discord engineering blog deep dive on how they added distributed tracing to their Elixir systems. They built an internal Transport library that wraps messages in an Envelope struct carrying serialized trace context, enabling gradual zero-downtime rollout.
• https://x.com/gleamlang/status/2033581228834603090 – Gleam announced the release of v1.15.0 on X.
• https://github.com/gleam-lang/gleam/releases/tag/v1.15.0 – Release page for Gleam v1.15.0, with changes across the compiler, build tools, language server, and many bug fixes.
• https://github.com/gleam-lang/gleam/blob/v1.15.0/CHANGELOG.md – Full changelog for Gleam v1.15.0.
• https://hexdocs.pm/phoenix_test/PhoenixTest.html – HexDocs page for PhoenixTest, which released v0.10.0 with all additions and fixes contributed by the community.
• https://github.com/germsvel/phoenix_test – GitHub repo for PhoenixTest.
• https://github.com/germsvel/phoenix_test/blob/main/CHANGELOG.md – Changelog for PhoenixTest v0.10.0, including support for dynamic inputs, conditionally rendered form inputs, and a new reload_page/1 helper.
• https://x.com/josevalim/status/2031794508745028012 – José Valim announced Distributed Python on top of Erlang distribution, with full Elixir and Livebook integration.
• https://dashbit.co/blog/distributed-python-livebook – Dashbit blog post detailing the Distributed Python integration in Livebook, including reproducible Python environments with uv, full Python cell support with autocompletion and docs on hover, zero-copy Apache Arrow, and interoperability with Elixir cells.
• https://x.com/expert_lsp/status/2031873718415204439 – Expert v0.1.0-rc.6 was released with bug fixes.
• https://x.com/swmansionelixir/status/2032119765267788202 – SW Mansion announced Popcorn v0.2, which adds a proper npm package for running Elixir in the browser.
• https://blog.swmansion.com/the-three-lang-problem-shipping-elixir-runtime-js-and-webassembly-as-one-npm-package-5a7b76ad5b90 – Blog post about the process of shipping Elixir runtime, JavaScript, and WebAssembly as one npm package with Popcorn.
• https://www.npmjs.com/package/@swmansion/popcorn – npm package page for Popcorn, the library that lets you run Elixir in the browser.
• https://www.reddit.com/r/elixir/comments/1rrds3n/announcing_nex_040_the_minimalist_elixir/ – Reddit announcement for Nex 0.4.0, a minimalist Elixir web framework powered by HTMX, inspired by Next.js, targeting rapid prototyping and the AI era.
• https://github.com/gofenix/nex – GitHub repo for Nex, the minimalist Elixir web framework.
• https://github.com/gofenix/nex/tree/main/examples – Examples for the Nex framework.
• https://hono.dev/ – Hono is a TypeScript minimalist web server framework (similar to a newer Express) referenced as a comparison point to Nex.
• https://x.com/zachsdaniel1/status/2030434559582478777 – Zach Daniel recommended RootCert's YouTube video as a great 12-minute elevator pitch for the BEAM.
• https://x.com/RootCert/status/2030428783015329833 – RootCert shared a walkthrough video of what makes the BEAM special — processes, messaging, registries, ETS, distribution, and its ecosystem.
• https://www.youtube.com/watch?v=dKaZ89SkVYY – 12-minute YouTube video by RootCert covering what makes the BEAM special and why Elixir was made for the current moment.
• https://github.com/openai/symphony – OpenAI published Symphony, an AI agent orchestration repo built primarily in Elixir (96.1%). It uses Elixir for supervising long-running processes, hot code reloading, and its active ecosystem.
• https://x.com/peregrine/status/2029289900428705935 – Jason Stiebs noted that OpenAI's Symphony uses a hand-rolled gen_tcp HTTP server rather than established libraries like Ranch or Mint, suggesting the project may be vibe-coded.
• https://x.com/DNAutics/status/2030361591611302024 – Discussion thread about whether Elixir and Erlang are still needed amid the rise of AI-assisted development and competing tools.
• https://rivet.dev/cloud/ – Rivet Cloud, a platform attempting to bring Actor-model-like benefits to TypeScript without using the BEAM.
• https://x.com/NathanFlurry/status/2030047986575921351 – Nathan Flurry of Rivet announced they are bringing "the benefits of Elixir to TypeScript" — though critics note it lacks true processes, links, monitors, and supervision trees.

Do you have some Elixir news to share? Tell us at @ThinkingElixir or email at show@thinkingelixir.com

Find us online

• Message the show - Bluesky
• Message the show - X
• Message the show on Fediverse - @ThinkingElixir@genserver.social
• Email the show - show@thinkingelixir.com
• Mark Ericksen on X - @brainlid
• Mark Ericksen on Bluesky - @brainlid.bsky.social
• Mark Ericksen on Fediverse - @brainlid@genserver.social
• David Bernheisel on Bluesky - @david.bernheisel.com
• David Bernheisel on Fediverse - @dbern@genserver.social

Sponsored By:

• Paraxial.io: Paraxial.io is sponsoring today's show! Sign up for a free trial of Paraxial.io today and mention Thinking Elixir when you schedule a demo for a special offer.

Show Notes online - http://podcast.thinkingelixir.com/222

Elixir Community News

• https://erlangforums.com/t/erlang-otp-27-1-released/4006 – OTP 27.1 was released, which is the first maintenance patch for OTP 27. It brings important fixes including upgrades in the Zip module with support for large archives, extended timestamps, UID/GID support, and enhanced directory handling. Several Windows-specific fixes are also included.
• https://x.com/moomerman/status/1838235643983364206 – unless keyword will be deprecated in upcoming Elixir 1.18. Users are encouraged to use if !condition instead. A mix format --migrate command is available to assist with the transition.
• https://github.com/elixir-lang/elixir/pull/13851 – Related GitHub pull request regarding the deprecation of unless keyword.
• https://github.com/elixir-lang/elixir/pull/13841 – Another related GitHub pull request for deprecating the unless keyword in Elixir 1.18.
• https://github.com/gleam-lang/gleam/releases/tag/v1.5.0-rc2 – Gleam v1.5.0-rc2 was released for testing.
• https://elixir-webrtc.org/ – Support for Data Channels in Elixir WebRTC was added, enhancing the project with features for sending arbitrary data over P2P connections.
• https://github.com/elixir-webrtc – GitHub organization for Elixir WebRTC, including recent updates and projects.
• https://x.com/mickel8v2/status/1838565408711880801 – Twitter announcement about the addition of data channels in Elixir WebRTC.
• https://blog.swmansion.com/data-channels-in-elixir-webrtc-0853c7d0e256 – Blog post explaining the significance and uses of data channels in Elixir WebRTC.
• https://www.elixirstreams.com/tips/mix-test-repeat-until-failure – ElixirStreams video tip on using mix test --repeat-until-failure n to run tests until failure, handy for diagnosing intermittent test failures.
• Mark's favorite seed to use is --seed 0, which runs tests in sequential order, which is helpful during TDD.
• https://www.elixirstreams.com/tips/mix-test-slowest-modules – New --slowest-modules n flag added to mix test helps identify modules with the slowest tests, complementing the existing --slowest n flag for individual tests.
• https://discord.com/blog/how-discord-reduced-websocket-traffic-by-40-percent – Discord shared a new blog post detailing how they reduced websocket traffic by 40% by switching from zlib to zstandard for compression and implementing PASSIVE_UPDATE_V2.
• https://github.com/silviucpp/ezstd – The Erlang library ezstd used by Discord, which they contributed to by adding streaming support.
• https://www.youtube.com/watch?v=QJCWzN1Vahs – ElixirConf Lightning talks released on YouTube, available as a single hour-long video with chapter timestamps.
• https://www.youtube.com/playlist?list=PLqj39LCvnOWbW2Zli4LurDGc6lL5ij-9Y – Playlist for ElixirConf Lightning talks on YouTube.
• https://elixirfriends.transistor.fm/episodes/friend-1-peter-ullrich – A new Elixir podcast called 'Elixir Friends' launched by German Velasco, featuring a casual and relaxed format. The first episode guest is Peter Ullrich.
• https://www.youtube.com/watch?v=5apHLuFi5JI – The Elixir Friends podcast is also available as a YouTube video with a runtime of 1:22:10.

Do you have some Elixir news to share? Tell us at @ThinkingElixir or email at show@thinkingelixir.com

Find us online

• Message the show - @ThinkingElixir
• Message the show on Fediverse - @ThinkingElixir@genserver.social
• Email the show - show@thinkingelixir.com
• Mark Ericksen - @brainlid
• Mark Ericksen on Fediverse - @brainlid@genserver.social
• David Bernheisel - @bernheisel
• David Bernheisel on Fediverse - @dbern@genserver.social

Show Notes online - http://podcast.thinkingelixir.com/177

Elixir Community News

• https://discord.com/blog/maxjourney-pushing-discords-limits-with-a-million-plus-online-users-in-a-single-server – Discord blog post detailing the scaling of individual Discord servers and the technical challenges involved.
• https://github.com/discord/manifold – GitHub link to Discord's opensource Elixir library "Manifold" used for batch message passing between nodes.
• https://www.youtube.com/watch?v=HP86Svk4hzI – Chris Grainger discusses using Elixir + Phoenix + Nx in production with machine learning on the BEAM.
• https://github.com/livebook-dev/livebook/pull/2316 – A Livebook PR titled "Upgrade to bandit" merged by José Valim, signifying an endorsement for the Bandit library.
• https://twitter.com/cvkmohan/status/1719489327925694682 – Discussion on Twitter about using Bandit as an upgrade for a Phoenix app.
• https://elixirstream.dev/gendiff/phx_new/19CBA027FA97E2873CC24093F6AC1820 – A flag added to elixirstream.dev for diffing generated output, introduced in Phoenix 1.7.8.
• https://github.com/sorentwo/oban_notifiers_phoenix – Release of a new Oban notifier powered by Phoenix.PubSub, compatible with OTP and now able to use Redis.
• https://twitter.com/bcardarella/status/1720179762088272080 – Tease of the upcoming LiveView Native v0.2 and its tutorial experience using Livebook.
• https://podcast.thinkingelixir.com/174 – Previous interview about DockYard's BeaconCMS
• https://twitter.com/bcardarella/status/1721172482298663214 – Twitter post discussing the 'Variants' feature for A/B/C/D/etc. page variant testing in BeaconCMS.
• https://twitter.com/NervesMeetup/status/1721389396417728782 – Announcement tweet for the next Nerves embedded systems meetup.
• https://www.meetup.com/nerves/events/290189609/ – Meetup link for the Nerves embedded systems event featuring a walkthrough by Alex McLain.

Do you have some Elixir news to share? Tell us at @ThinkingElixir or email at show@thinkingelixir.com

Find us online

• Message the show - @ThinkingElixir
• Message the show on Fediverse - @ThinkingElixir@genserver.social
• Email the show - show@thinkingelixir.com
• Mark Ericksen - @brainlid
• Mark Ericksen on Fediverse - @brainlid@genserver.social
• David Bernheisel - @bernheisel
• David Bernheisel on Fediverse - @dbern@genserver.social
• Cade Ward - @cadebward
• Cade Ward on Fediverse - @cadebward@genserver.social

Sponsored By:

• Fly.io: Fly.io is a great place to deploy your next Phoenix application! Check them out!