Programming

Join Senior Software Engineer Nick Krichevsky as he explains how Discord added distributed tracing to Elixir's message passing and optimized it to handle millions of concurrent users.

Got benchmarks in CI? You can (maybe) use tests to catch performance changes even earlier.

Your software’s speed needs some form of testing; big-O scaling is a good starting point.

Tracking down a mysterious write throughput degradation

Using Google Gemini to build a vigdeo game using higher level libraries

Schema design, dataloader, subscriptions, and authentication patterns

Building event stores, projections, and handling schema evolution in Elixir

A recent study by Tencent showed that Elixir had the highest completion rate across models when compared among 20 different programming languages. In this article, we explore the reasons why that may be the case and how that extrapolates to coding agents.

p5.js a JS client-side library for creating graphic and interactive experiences, based on the core principles of Processing.

A set of functions to access National Football League play-by-play data from https://www.nfl.com/.

Learn how code refactoring can simplify code, improve maintainability and readability, enhance efficiency, reduce complexity, and prevent bugs.

A web-based control plane for your development environment. Manage terminals, services, logs, and git worktrees from one keyboard-driven interface.

Fast and Extensible Markdown for Elixir with native Phoenix LiveView HEEx integration.

Learn how to be a more efficient programmer

We’ve been working with MCP servers for a while, and this use case was a perfect opportunity to build out another one.

by Vinicius Negrisolo and Gabriel Reis: This article discusses the development of a Model Context Protocol (MCP) server using Elixir for creating TIL (Today I Learned) posts from within AI tools.

An MCP server implementation in Elixir for testing and experimenting with the Model Context Protocol. Requires Elixir 1.14+ and Mix. The server can be run locally using 'mix run --no-halt'. The OpenRPC specification is included in 'priv/static/mcp-openrpc.json'.

So many loops…

Executive Summary

A clear, practical guide to code review: why it matters, the PERFECT principles, and how to build an effective review process.

When upgrading to Elixir 1.19 with Erlang/OTP 28, the deployment failed with a cryptic error: The fix was simple - just add one characters: But why...

I find myself writing yet another toy parser, as one does during a Christmas break. It roughly follows Resilient LL Parsing Tutorial. Not because I need resilience, but mostly because I find producing a syntax tree and a collection of diagnostics a more natural fit for the problem than bailing out on the first error.

So there I was, implementing a one element ring buffer. Which, I'm sure you'll agree, is a perfectly reasonable data structure.

Skipping expensive per-row subqueries to speed up my average query ~17%.

Running a private registry is easy; making it searchable isn't. Here's how reg taps SQLite to expose fast queries without touching S3.

This defines sweet-expressions (t-expressions) for Scheme, building on neoteric-expressions (n-expressions) and curly-infix-expressions (c-expressions). This defines an approach to making Scheme more 'readable' by adding syntactically-meaningful indentation, as well as supporting infix and functions whose names precede the opening parenthesis.

When you're selling stuff, every click away from your website is a potential lost sale. Customers kept asking us to allow people to buy tickets without leavi...