March 2025
Intermediate to advanced
240 pages
5h 54m
Spanish
Content preview from Eficiente Node.js
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Capítulo 1. Fundamentos de los nodos
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Node es un entorno de ejecución multiplataforma de código abierto en el que los desarrolladores pueden crear servicios backend utilizando el lenguaje JavaScript. Está construido sobre V8, el motor JavaScript del navegador web Chrome, y tiene docenas de módulos incorporados que están diseñados para ser utilizados de forma asíncrona con un enfoque basado en eventos que se conoce comúnmente como modelo de no bloqueo. Los desarrolladores de Node pueden utilizar eventos y funciones manejadoras para realizar eficientemente múltiples operaciones en paralelo, sin tener que lidiar con la complejidad de múltiples procesos e hilos.
Hay mucho que desentrañar, y eso es lo que haremos en este primer capítulo. Empezaremos con una introducción a Node, cómo funciona y por qué es popular. Aprenderemos los fundamentos de la CLI de Node, cómo utilizar módulos y paquetes, y cómo realizar operaciones síncronas y asíncronas. Discutiremos los fundamentos del modelo no bloqueante y basado en eventos de Node y aprenderemos cómo se pueden utilizar las devoluciones de llamada, las promesas y los eventos para gestionar el resultado de una operación asíncrona.
Nota
A lo largo del libro, utilizo el término Node en lugar de Node.js por brevedad. El nombre oficial del entorno de ejecución es Node.js, pero es habitual referirse a él simplemente como Node.
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