How to Create an Easier Recommendation System with Elixir
How to Create an Easier Recommendation System with Elixir Recommendation systems power some of the most engaging experiences on the web—from Netflix…
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I built a circuit breaker for runaway cloud spend
A misconfigured loop once burned $34k in 8 days. not a typo, and not a big company; the invoice was the first anyone heard of it. i kept coming back…
I built a Pix library for Elixir (and one cent proved it works)
Over the last few months I became a bit of a compulsive open source contributor. Translating Linux kernel documentation into Portuguese, a merged PR…
Building Distributed Systems in Elixir: Part 9 — Backpressure
In the previous part of this series, we built a Publish / Subscribe Broker from scratch. We saw how a central coordinator could fan out events acros…
New Server-Driven UI in Elixir: Stateless, RESTful, and HTML-Native with WFC
What if a web application could provide rich, interactive user interfaces while keeping the server stateless , using standard HTTP , working natural…
Running Elixir on a 64KB Microcontroller with AtomVM and UIAPduino
日本語版 Introduction Recently, I attended SWEST28 , a summer workshop focused on embedded systems technologies. https://swest.toppers.jp/phx/event At t…
Texttile, a multiplayer blog engine for people who write together
This is a shortened version of my original post . My wife and I have blogged about every trip since our honeymoon 10 years ago. For the people at ho…
CEPA: A Consensus-Governed Plugin Architecture Explained in 8 Concepts
CEPA: A Consensus-Governed Plugin Architecture Explained in 8 Concepts The problem of fork spaghetti , elementary premises, facts, actions, instigat…
Learning Elixir: Project Structure
When an Elixir project outgrows a handful of modules, the habit of pasting definitions into IEx starts to break down — redefinition warnings pile up…
Building Distributed Systems in Elixir: Part 7 — Worker Pool
In the previous part of this series, we explored named processes. We saw how registering a process under an atom like :worker provided a stable publ…
Building Distributed Systems in Elixir: Part 6 — Named Processes
In the previous part of this series, we built a tiny supervisor from scratch. When a worker crashed, the supervisor started a replacement. That repl…
Building Distributed Systems in Elixir: Part 5 — Supervisor From Scratch
In the previous part of this series, we explored process links. A linked worker that crashes sends an exit signal to the process linked to it. By de…
Zenoh's put is fire-and-forget, get isn't — a read-after-write race in Elixir
This English version is an AI translation of my original article on Qiita (in Japanese) . Background I've been experimenting with Zenoh via its Elix…
Ash: ways to contact — AshJsonApi, AshGraphQL and AshTypescript
Building a stable product capable of withstanding high loads across different servers is a complex and resource-intensive task. A programmer can't f…
Elixir 1.20 has a type system now: comparing it with Rust and TypeScript
This English version is an AI translation of my original article on Qiita (in Japanese) . About this article On June 3, 2026, Elixir 1.20 shipped wi…
WhatsApp Has 2 Million Connections Per Server. What's Your Number?
The engineering case studies that prove what the BEAM can actually do When engineers debate programming languages, the conversation often stays abst…
I Stopped Curating Games. I Built an AI Agent to Run My Portal Instead.
Picture this: You want to build a gaming portal. You need to find the games, playtest them, categorize them, write descriptions, extract thumbnails,…
Three Questions Every Zero-Knowledge Builder Gets Asked (And How I Answer Them)
Last week, a fellow builder working on a zero-knowledge financial tracker left a thoughtful comment on the Metamorphic Product Hunt page. He hit his…
Testing a LiveView App with Playwright: Fixing Navigation Timeouts
I was building a Playwright suite against a Phoenix LiveView app for the first time. Tests ran fine in isolation. Overnight, the full suite timed ou…