March 2025
Intermediate to advanced
240 pages
5h 54m
Spanish
Content preview from Eficiente Node.js
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Capítulo 6. Corrientes
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Los flujos de Node tienen fama de ser difíciles de entender y de trabajar con ellos. Puede que fuera así en los primeros días de Node, pero las cosas han cambiado. Hoy es relativamente fácil crear y consumir flujos en Node. Incluso podemos utilizar iteradores y generadores asíncronos nativos de JavaScript para trabajar con flujos de Node.
En este capítulo, explicaré el concepto de flujos, por qué son necesarios y cómo crearlos, utilizarlos y combinarlos para procesar eficazmente grandes cantidades de datos sin saturar la memoria disponible para un proceso de Nodo.
Presentación de Streams
Cuando descargas un archivo de Internet, ves un programa o escuchas una canción, estás utilizando streams. El contenido se transmite a ti de uno en uno.
Los flujos son básicamente colecciones de datos, similares a las matrices o cadenas, pero en lugar de almacenar los datos en el espacio de memoria, los flujos procesan los datos a lo largo del tiempo. Puedes utilizar flujos para procesar cantidades muy grandes de datos utilizando un espacio de memoria limitado.
Las analogías para los flujos están a nuestro alrededor en la vida. Cuando tienes el fregadero lleno de platos sucios, puedes cargarlos en un lavavajillas, y eso sería procesarlos todos a la vez, como tenerlos en una matriz. Si no puedes utilizar un lavavajillas, tendrás que emplear el concepto de ...
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