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Elixir Radar Newsletter
Issue #522
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This issue is brought to you by Code BEAM Europe 2026 ...
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Biggest Erlang, Elixir & Gleam conference in Europe - Code BEAM Europe 2026. Hear Sam Aaron (Sonic Pi creator), Brooklyn Zelenka (Fission founder), Frank Hunleth (Nerves co-author) and more! 3 keynotes, 30 speakers, 300+ attendees, 2 tracks + an informal space.
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Oct 21-22, Haarlem (PHIL) & Online
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Current pricing ends 17 Sept
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Mike Zornek shares the agent skill he built for updating Elixir dependencies: it reads changelogs, adjusts the code, and opens a PR with inline notes and hex diffs.
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Sometimes data arrives faster than you can process it. Carlos Andrés Bolaños introduces Tidefall, an ETS-based buffer for high-throughput writes in Elixir. It hands items to your processor in batches, and its coalescing mode keeps only the latest value per key. And yes, he explains when and why Tidefall makes sense, given we have Broadway.
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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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Pieter Claerhout walks through adding TOTP-based 2FA to a Phoenix LiveView app on top of phx.gen.auth: generating the secret, rendering the QR code in a settings LiveView, and verifying the code with a challenge step at login.
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An in-memory rate limiter doesn't synchronize across nodes, and a common fix is to add Redis. But in Elixir, we can leverage distributed Erlang! Johanna Larsson shows how to make a local rate limiter cluster-aware instead, routing each key to its owner node with rendezvous hashing.
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How far can you get building RAG without leaving the BEAM? George Guimarães presents Arcana, a library that runs embedding models locally with Nx and Bumblebee, stores vectors in pgvector, and includes a LiveView dashboard to watch the whole pipeline in action.
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Sapient Search - 100% Remote
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As a market leading, fast-growing, event ticketing technology company, we need motivated and talented individuals to assist with delivering exceptional results that create great solutions for our customers.
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September 10-11 / Chicago, USA & Virtual
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September 30 - October 02 / Vanberg, Sweden
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October 21-22 / Haarlem, Netherlands & Virtual
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November 12-13 / Austin, USA
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Understand financial markets using Elixir, so you can analyze your own portfolio and investments.
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As always, thanks for reading Elixir Radar!
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-- Hugo
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