El Solitario

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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.
Diagram of erasure coding splitting a file into data and parity fragments
Noticias Tech

Erasure Coding: How HDFS Cuts Replication Cost from 200% to 50%

Erasure coding splits data into fragments and computes mathematical parity to tolerate disk failures without tripling storage. This article explains how Reed-Solomon works, includes functional Python code, and compares it to RAID 6 and classic replication.

By Javier Alarcón, 3 hours30 August, 2026 ago
Diagram of a CDN distributing content across edge caches
Noticias Tech

CDN: How the Network That Brings Your Website Closer to Users Works

A CDN is a network of servers that stores copies of your content close to each user so pages load faster. This guide explains edge caching, anycast routing, and how to configure it with real examples in Nginx and Cloudflare Workers.

By Javier Alarcón, 2 days28 August, 2026 ago
Diagram of Cloudflare's DNS cache data structures
Redes

Cloudflare Saves 100 Terabytes by Optimizing the 1.1.1.1 DNS Cache

Cloudflare redesigned the data structures behind the 1.1.1.1 DNS cache and freed nearly 100 terabytes of memory across its entire fleet. The changes in Rust also improved performance, with higher throughput and lower latency.

By Javier Alarcón, 3 days27 August, 2026 ago
Nvidia and Hugging Face logos representing the Nvidia Hugging Face negotiation
Noticias Tech

Nvidia in Talks to Buy Hugging Face for Over $13 Billion

Nvidia is negotiating to buy Hugging Face for over $13 billion dollars, Business Insider revealed on August 27, 2026. The deal, still unclosed, would give Nvidia control over the central repository of open AI models. Hugging Face had already turned down a smaller Nvidia offer in late 2025.

By Javier Alarcón, 3 days27 August, 2026 ago
DuckDB logo next to the AWS logo illustrating that DuckDB open source remains under the MIT license
Noticias Tech

DuckDB Open Source Will Stay Free Even as DuckLabs Joins AWS

DuckLabs, the company behind DuckDB, will join Amazon Web Services (AWS) in early September 2026. The team will stay in Amsterdam, and DuckDB, DuckLake, and Quack will remain free software under the MIT license, governed by the DuckDB Foundation.

By Javier Alarcón, 4 days26 August, 2026 ago
Xring O3, Xiaomi's new chip with ARM SME2 and SVE2 architecture
Noticias Tech

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, 6 days24 August, 2026 ago
Diagram of Microsoft Paint embedding an invisible GUID watermark in an AI-generated image
Noticias Tech

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, 6 days24 August, 2026 ago
AI data centers: power infrastructure and servers
Noticias Tech

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, 6 days24 August, 2026 ago
Industrial line-scan camera mounted pointing out a train window
Redes

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 weeks18 August, 2026 ago
Screenshot showing the Bluesky logo instead of the Follow button
Noticias Tech

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 weeks17 August, 2026 ago

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El Solitario > Articles by: Javier Alarcón
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