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Tutorials

WebRTC connection diagram between two browsers
Programming

WebRTC: How Two Browsers Connect Without an Intermediary Server

WebRTC connects two browsers in real time without relying on a central server to transmit video, audio, or files. STUN, TURN, and ICE solve the NAT traversal problem and let you code your first peer-to-peer connection in just a few lines.

By Andrés Morales, 2 months21 July, 2026 ago
Logo of the Python programming language
Programming

Introduction to the Python Language

Python is now one of the most widely used languages in the world and the standard in artificial intelligence and data science. What it is, what it’s good for, its history, and how to take your first steps with version 3.14.

By Andrés Morales, 2 months18 July, 2026 ago
Diagram of the Raft algorithm with leader and followers in distributed consensus
Programming

Raft: The Consensus Algorithm Behind etcd and Kubernetes

The Raft algorithm solves how a distributed cluster elects a single leader and replicates its log without corrupting data during node failures. Etcd, Kubernetes, Consul, and CockroachDB use it in production to maintain strong consistency.

By Andrés Morales, 2 months18 July, 2026 ago
Artistic illustration of the LHS 1140b atmosphere around a red dwarf star
Tech News

First Atmosphere Detected on a Habitable Rocky Planet: LHS 1140b

A Harvard-led team detected helium in the atmosphere of LHS 1140b, the first confirmed atmosphere on a rocky planet within another star’s habitable zone. Helium alone can’t sustain life, but the discovery marks a milestone in the search for habitable worlds.

By Andrés Morales, 2 months18 July, 2026 ago
Terminal running ANALYZE on a SQLite in production database
Programming

SQLite in Production: ANALYZE, WAL, and Backups with Litestream

Running SQLite in production is not just about copying the .db file: you need to understand ANALYZE, WAL mode, and how to make backups that actually restore. This guide covers all three with exact commands and code examples.

By Andrés Morales, 2 months18 July, 2026 ago
IoT security diagram: firmware extraction with SPI programmer
Security

TP-Link Kasa EC71: Fleet-Wide RSA and Unsalted MD5 Exposed in CVE-2026-9770

A researcher extracted the firmware from a Kasa Spot EC71 camera and found an RSA key shared across the entire fleet, passwords stored with unsalted MD5, and GPS data exposed without authentication. TP-Link fixed all three flaws in firmware 2.4.1 after six months of coordinated disclosure.

By Clara Vásquez, 2 months18 July, 2026 ago
Zilog Z80 40-pin integrated circuit chip on a retro circuit board
Tech News

The Zilog Z80 Turns 50: Here’s Its Internal Architecture

The Zilog Z80 turned 50 in July 2026, two years after Zilog discontinued the original chip. We look at its internal architecture, its origin tied to the Intel 8008, and how to program it today with free tools.

By Javier Alarcón, 2 months18 July, 2026 ago
Diagram of singular value decomposition SVD and PCA in data mathematics
Artificial Intelligence

SVD and PCA: The Math That Compresses Thousands of Dimensions Into a Few

SVD and PCA are the mathematical foundation that makes it possible to compress high-dimensional data without losing relevant information. A new academic book on arXiv organizes all this theory, and here we explain it with Python code from scratch.

By Andrés Morales, 2 months16 July, 2026 ago
Diagram of the data tools lifecycle: ETL, warehouse, and BI
Programming

ETL, warehouse, and BI: the data tooling map for developers

A developer who lands on a data team hears ETL, warehouse, lakehouse, and reverse ETL in the first meeting and understands none of it. This article maps the full data lifecycle, from source to dashboard, with code examples in SQL, Python, and dbt so any engineer can grasp what each tool does and when to use it.

By Andrés Morales, 2 months16 July, 2026 ago
Diagram of a job queue with producer, broker, and workers
Programming

Job queues: how retries, idempotency, and DLQs work

Job queues decouple the producer from the consumer, but they hide hard problems: duplicate retries, non-idempotent jobs, and messages that never resolve. This article walks through each piece with code examples in BullMQ, SQS, and RabbitMQ.

By Andrés Morales, 2 months16 July, 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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