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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.
Xring O3, Xiaomi's new chip with ARM SME2 and SVE2 architecture
Tech News

Xring O3: Xiaomi’s Chip Scores 3,945 on Geekbench Single-Core

The Xring O3, Xiaomi’s new flagship processor, scored 3,945 points on Geekbench single-core and 15,221 on multi-core. Its 44 MB of cache and 21 execution ports point to a trend toward massively parallel ARM cores, though the technical community questions the legitimacy of the figures.

By Javier Alarcón, 2 months24 August, 2026 ago
Diagram of Microsoft Paint embedding an invisible GUID watermark in an AI-generated image
Tech News

Microsoft Paint Embeds an Invisible GUID in Every AI-Generated Image

A security researcher discovered that Microsoft Paint and the Photos app embed a server-issued GUID as an invisible watermark in every image generated with local artificial intelligence. The feature is independent of the visible Copilot logo and cannot be turned off from the settings.

By Javier Alarcón, 2 months24 August, 2026 ago
AI data centers: power infrastructure and servers
Tech News

UC San Diego to Test New Power Technology for AI Data Centers

UC San Diego announced it will test an experimental power technology to supply AI data centers. The initiative responds to the growing electricity demand required by large-scale AI model training and inference.

By Javier Alarcón, 2 months24 August, 2026 ago
Industrial line-scan camera mounted pointing out a train window
Networking

Basler ruL2048-19gm: The Camera That Turns a Train into a Scanner

A developer built an industrial line-scan camera system to capture continuous panoramic photographs from trains and ferries. The project, presented at EMFcamp 2026, produced images over 56,000 pixels wide from a camera originally designed to inspect conveyor belts.

By Javier Alarcón, 2 months18 August, 2026 ago
Screenshot showing the Bluesky logo instead of the Follow button
Tech News

Bluesky Uses a Secure Text Field to Inject Its Logo into Screenshots

Bluesky’s iOS app swaps the Follow button for its butterfly logo the instant the system detects a screenshot. The mechanism, found in the app’s open source code, repurposes an iOS feature meant to hide passwords.

By Javier Alarcón, 2 months17 August, 2026 ago
RISC-V microcontroller CH32V003 on an affordable development board
Tech News

CH32V003: The 10-Cent RISC-V Chip Dividing the Community

The CH32V003, a ten-cent RISC-V microcontroller, is at the center of a response from an embedded engineer in Trinidad and Tobago to the harshest article the architecture has received in years. The debate exposes a real tension between design elegance and hardware access outside the United States and Europe.

By Javier Alarcón, 2 months17 August, 2026 ago
Diagram comparing interrupt handling in RISC-V versus ARM Cortex-M0
Tech News

RISC-V spends 44 cycles on an interrupt, Cortex-M0 only 27

A technical critique of RISC-V’s design, published by engineer Dmitry.GR, breaks down why the open ISA’s interrupt handling is more costly than that of a low-end ARM Cortex-M0 core. The analysis counts cycle by cycle how the lack of automatic register stacking forces developers to write assembly routines before reaching the C code.

By Javier Alarcón, 2 months15 August, 2026 ago
Diagram of Kubernetes on Oxide integrations: Rancher, Omni, and Cluster API connected to the Oxide API
Tech News

Oxide Launches Official Kubernetes Integrations: Rancher, Omni, and Cluster API

Oxide Computer built three Kubernetes integrations, Rancher, Omni, and Cluster API, following the real problems its customers ran into when deploying clusters. The process included a Talos Linux bug that prevented reading Oxide’s user-data and an improvised temporary fix before KubeCon.

By Javier Alarcón, 2 months13 August, 2026 ago
NVIDIA Nemotron 3.5 Lightning logo, MoE model for AI agents
Tech News

NVIDIA Launches Nemotron 3.5 Lightning, a 30B MoE for AI Agents

NVIDIA launched Nemotron 3.5 Lightning, a 30-billion-parameter MoE model optimized for high-volume AI agents. Alongside it comes NeMo Switchyard, an open source library that routes each task to the most suitable model based on cost, latency, and quality.

By Javier Alarcón, 2 months12 August, 2026 ago
Illustration of load balancing distributing traffic across servers
Tech News

Load Balancing: How Traffic Gets Distributed Across Servers

Load balancing is the infrastructure piece that distributes traffic across servers so none of them gets overloaded and a single failure doesn’t take down your application. This article shows real Nginx and HAProxy configurations and explains how to verify everything works.

By Javier Alarcón, 2 months11 August, 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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