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Elixir Radar Newsletter
Issue #529
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This issue is brought to you by Potions.io ...
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Potions gives you the ease of a PaaS on servers you own. It provisions your DigitalOcean or Hetzner VPS, then deploys your Elixir app on every push: zero downtime, automatic SSL, PostgreSQL, logs, and a remote console, all in one dashboard.
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Try it out with a 14-day free trial at Potions.io.
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Learn how Supervisors work by creating one from scratch with these BEAM primitives: spawn, send/receive, monitor. Christophe De Troyer shows you how. Another cool thing about this post: you can run every code block on a real BEAM in your browser (maybe he's using Popcorn? 🤔).
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How many tests in your suite would actually catch a regression? Aleksei Matiushkin discusses what sets regression tests apart, why it's good that Elixir won't let you test private functions, and why this matters now that LLMs write so much of our code.
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Elixir for Finance book -
Sponsor
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This is the third book I've worked on with Alex Koutmos. For this one, he brought in his brother, who holds a PhD in finance. You'll learn how to use Elixir to understand financial markets, so you can analyze your own portfolio and investments.
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Goatmire 2026 had the first official conference badge powered by AtomVM, an ESP32-S3 with a color display, keyboard, and infrared. Davide Bettio shares what people hacked on it, the LiveView-based badge simulator, and new ExAtomVM mix tasks that make installing and flashing simpler.
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Lars Wikman looks back at Goatmire 2026. Have you seen the photos? They look amazing! I love the idea of a deliberately weird (and innovative!) conference. I wish I'd been there. As we say in Brazil, "I already miss what I never lived."
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Running 15+ microservices across Ruby, Python, C, and more made every new feature expensive. Alykhan Jetha talks about moving a native, offline-first CRM to an Elixir and Ash monolith.
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Vibrant Planet - Remote, USA
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Our applications support decision making to keep communities safer and ecosystems healthier. As application engineers, we build tools that land managers, fire districts, and utility planners use to make decisions to mitigate wildfire and climate risk, across our wildfire resilience and utilities applications. These applications run and present the results of optimizations and simulations as both statistics in tables and charts, and layers on a map.
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October 21-22 / Haarlem, Netherlands & Virtual
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November 12-13 / Austin, USA
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May 20-21, 2027 / Curitiba, Brazil & Virtual
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Learn how to leverage OTP and the power of the BEAM.
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As always, thanks for reading Elixir Radar!
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-- Hugo
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