Parte 2: Node.js Internals - Loop de Eventos, libuv y Buffers

Descubre los secretos de Node.js: Event Loop, libuv, Buffers, Streams, memoria y más. Explicación clara y detallada para desarrolladores.

8 jul 2026 • 1 min read • Q2BSTUDIO Team

Entiende el Event Loop, libuv y la gestión de memoria en Node.js

Descubre en profundidad cómo funciona realmente Node.js por dentro: el bucle de eventos, libuv, los buffers y la gestión de memoria. Este artículo desmonta mitos como el de 'single-threaded' y explica cómo el motor C++ de Node y la biblioteca libuv permiten manejar miles de peticiones simultáneas sin bloquear el hilo principal de JavaScript. Analizamos las fases del event loop, el rol de los micropocesos (Promises y nextTick), la diferencia entre trabajo ligado a I/O y trabajo intensivo de CPU, y cuándo usar Worker Threads o clustering con PM2 para escalar. También abordamos la verdadera ubicación de los buffers en memoria nativa frente al heap de V8, la recolección de basura generacional y las fugas de memoria típicas. Todo ello desde una perspectiva práctica y profesional, pensado para desarrolladores que quieren dominar el rendimiento de sus aplicaciones. En Q2BSTUDIO aplicamos estos conocimientos para construir aplicaciones a medida robustas y escalables, integrando ia para empresas y soluciones de servicios cloud aws y azure. Nuestro equipo también ofrece ciberseguridad avanzada y servicios inteligencia de negocio con Power BI, así como automatización de procesos y desarrollo de agentes IA. Un artículo imprescindible para entender las entrañas de Node y tomar decisiones técnicas informadas en proyectos de software a medida.

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