264: Hot Reload In Dev and QA Bottlenecks

News includes Phoenix v1.8 shipping with an AGENTS markdown file for new apps to enhance coding agent experiences, Popcorn bringing Elixir to the browser through WebAssembly with no installation required, LiveVue v0.6.0 with 90% payload size reduction through JSON Patch operations, an awesome LiveView development tip for hot-reloading code changes while preserving LiveView state, MDEx v0.8 adding decorators support for enhanced code block styling, Hologram v0.5.0 delivering major performance improvements with milliseconds to microseconds execution times, ElixirConf US 2025 tickets available with our discount code, and a discussion about how AI-generated code is creating new bottlenecks in QA and code review processes, and more!

Show Notes online - http://podcast.thinkingelixir.com/264

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/1948826989357367698 – José Valim announces Phoenix v1.8 will ship with an AGENTS markdown file for new apps, ensuring teams using coding agents have an outstanding experience out of the box
• https://github.com/phoenixframework/phoenix/commit/50ffaa5aa1c60503f01cd2107edd43f22435f9e7 – Phoenix commit adding the AGENTS.md file by Chris McCord
• https://github.com/phoenixframework/phoenix/blob/main/installer/templates/phx_single/AGENTS.md – The actual AGENTS.md template file in Phoenix
• https://hex.pm/packages/usage_rules – Related package for usage rules
• https://bsky.app/profile/membrane-swmansion.bsky.social/post/3luptf3p76s24 – Announcement post about Popcorn - Elixir in your browser via WebAssembly
• https://popcorn.swmansion.com/ – Popcorn - run Elixir locally in your browser with no install required
• https://popcorn.swmansion.com/demos/eval – Interactive IEx shell demo running in the browser
• https://github.com/software-mansion/popcorn/ – GitHub project for Popcorn
• https://blog.swmansion.com/popcorn-bringing-elixir-to-the-browser-8993a58a00be – Blog post explaining how Popcorn works and its limitations
• https://github.com/atomvm/AtomVM – AtomVM - Tiny Erlang VM that powers Popcorn
• https://atomvm.org/ – AtomVM website with details about the lightweight BEAM implementation
• https://hackaday.com/2025/06/25/floss-weekly-episode-838-atomvm-and-the-full-stack-elixir-developer/ – Podcast appearance by AtomVM team
• https://x.com/jskalc/status/1947674420459254203 – LiveVue v0.6.0 release announcement
• https://github.com/Valian/live_vue – LiveVue project - end-to-end reactivity for Phoenix LiveView and Vue
• https://x.com/jskalc/status/1950110941137285567 – Jakob explains new End to End testing setup for LiveVue
• https://x.com/jskalc/status/1949882608424538420 – Awesome LiveView development tip for hot-reloading while keeping state
• https://x.com/jskalc/status/1788308446007132509 – Original tip post about LiveView hot reloading
• https://gist.github.com/chrismccord/2c26c876bb4430c1bdcd313b64e4c2c5 – Chris McCord's Gist showing how to implement LiveView hot reload with state preservation
• https://x.com/leandrocesquini/status/1949827775541502037 – MDEx v0.8 release announcement
• https://github.com/leandrocp/mdex – MDEx project - Markdown processor for Elixir
• https://hexdocs.pm/mdex/0.8.0/MDEx.html#module-code-block-decorators – Documentation for MDEx decorators feature
• https://bsky.app/profile/bartblast.com/post/3lutbbibma22a – Hologram v0.5.0 announcement
• https://hologram.page/blog/hologram-v0-5-0-released – Hologram v0.5.0 release blog post
• https://github.com/bartblast/hologram – Hologram project - components defined in Elixir that become JS in the browser
• https://elixirconf.com/ – ElixirConf US 2025 website
• https://ti.to/elixirconf/2025/discount/ThinkingElixir – ElixirConf ticket discount link with ThinkingElixir code for 10% off
• https://x.com/ThatArrowsmith/status/1948490317277143438 – George Arrowsmith's tweet about QA becoming a bottleneck with AI-generated code
• https://x.com/mikehostetler/status/1948491086130819331 – Mike Hostetler's response about teams struggling with code review and QA of AI-generated code
• https://x.com/josevalim/status/1948634632716488809 – José Valim's insight on the need for new software verification practices with AI code generation
• https://www.youtube.com/watch?v=RM2IZLR0LXc – Mark's first AI demo video: I Built an AI Tool That Saves Me Hours Every Week (Demo)
• https://www.youtube.com/watch?v=piS1J4ru1fE – Mark's second AI demo video: How to Build AI Systems That Actually Run Your Business (Not Just Chat)

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.