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Javier Alarcón

Infrastructure engineer specializing in networking, Linux systems, Kubernetes, and cloud architectures. Covers hardware, networking, observability, and engineering practices for production teams.
Cloudflare celld, the distributed platform born from the Deno merger
Tech News

Cloudflare Takes On Deno’s Entire Team

Cloudflare announced that the entire Deno team is joining the company to build Cloudflare celld, a platform that combines the Workers model with Durable Objects. Deno Deploy will stop operating in six months, and JSR is moving its infrastructure to Cloudflare.

By Javier Alarcón, 6 days9 October, 2026 ago
Apple Intelligence and disk space management on macOS
Tech News

RemoveMacAI: Turn Off Apple Intelligence and Delete Its Models

Apple Intelligence keeps storing its AI models on your Mac’s disk even after you disable them from Settings. This article covers how that on-device storage works and how RemoveMacAI, an open source tool, shuts it all down with one reversible command.

By Javier Alarcón, 1 week4 October, 2026 ago
AMDGPU for GCN cards running on an old AMD GPU with Linux
Tech News

A Valve Engineer Modernizes AMDGPU for GCN Cards

At XDC 2026, Valve revealed Timur Kristóf’s work to modernize AMDGPU for GCN cards, AMD GPUs from a decade ago. The change enables RADV Vulkan support and fixes display and power bugs the legacy driver never resolved. AMD, meanwhile, barely invests in these cards.

By Javier Alarcón, 2 weeks4 October, 2026 ago
Diagram of Asahi Linux booting on a Mac mini with M4 chip
Tech News

Asahi Linux on the Apple M4: It Booted Despite SPTM

The Asahi Linux team managed to boot Linux on the first Mac mini with an M4 chip, a SoC shielded by Apple’s new SPTM. The feat combined reverse engineering, printf debugging, and plenty of patience.

By Javier Alarcón, 2 weeks3 October, 2026 ago
Digital lock representing age verification blocked by VPN encryption
Networking

VPN: Why It Can’t Verify Your Age by IP

A Utah court blocked a 2026 law that required precisely verifying the age of every visitor to an adult site. The reason is technical: a VPN encrypts traffic and hides the user’s real location, so no site can tell a Utah user apart from one anywhere else in the world.

By Javier Alarcón, 2 weeks2 October, 2026 ago
Terraform and OpenTofu: infrastructure as code in the cloud
Tech News

Terraform: How to Declare Your Infrastructure as Code with HCL

Terraform declares servers, networks, and databases as versioned code instead of manual clicks in a cloud console. This article explains how the plan/apply cycle works, why the OpenTofu fork was born, and how to write your first reproducible module with progressive examples.

By Javier Alarcón, 3 weeks21 September, 2026 ago
Samsung HBM4 memory chip used in artificial intelligence accelerators
Tech News

Samsung Will Double HBM4 Production in 2027 with More Glass Carriers

Samsung plans to more than double HBM4 production in 2027, backed by a 2.5x jump in glass carrier demand. The report details how the product mix shifts toward HBM4E and what it means for AI memory supply.

By Javier Alarcón, 3 weeks20 September, 2026 ago
Diagram of Cloudflare Quick Tunnels exposing a local server to the internet
Tech News

Cloudflare Quick Tunnels Adds JSON Output for Coding Agents

Cloudflare added JSON output to cloudflared’s Quick Tunnels, the tool that turns any local server into a public, encrypted URL with a single command. The update is aimed at coding agents that need to read the tunnel’s hostname and status without parsing logs.

By Javier Alarcón, 4 weeks18 September, 2026 ago
Fujitsu FUJITSU-MONAKA chip, a 2nm CPU for sovereign AI
Tech News

FUJITSU-MONAKA: 2nm CPU That Doubles AI Inference Performance

Fujitsu announced FUJITSU-MONAKA, its new 2-nanometer CPU manufactured in Japan, promising to double AI inference performance without a GPU. The Fujitsu MONAKA Server arrives in November 2026 in Japan and Europe as the foundation for sovereign AI infrastructure.

By Javier Alarcón, 4 weeks17 September, 2026 ago
Fugleramme e-ink frame displaying AI-detected bird illustrations
Tech News

Fugleramme: 800 Bird Illustrations for an E-Ink Frame with Local AI

Fugleramme is an open source project that detects birds by audio using local AI and draws them with real 19th-century illustrations on an e-ink panel. It runs on a Raspberry Pi 5 and already has 1,500 stars on GitHub.

By Javier Alarcón, 4 weeks15 September, 2026 ago

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Linux Courses

  • Curso Introducción a Linux: Instala Linux en tu PC

    Introducción a Linux: Instala Linux en tu PC

    Empezá seguro en Linux: instalación paso a paso.

    ★ 4,6 en UdemyGratis
  • Curso Aprendiendo Linux: uso, terminal y comandos

    Aprendiendo Linux: uso, terminal y comandos

    Entorno de escritorio y comandos básicos de GNU/Linux.

    ★ 4,4 en Udemy$19,99

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El Solitario > Articles by: Javier Alarcón

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