October 2024
Intermediate to advanced
270 pages
8h 13m
Spanish
Content preview from 97 cosas que todo programador Java debe saber
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Capítulo 97. El joven, el viejo y la basura
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María Arias de Reyna
Una de las principales ventajas de Java es que los desarrolladores no han tenido que preocuparse (mucho) por la memoria. A diferencia de muchos otros lenguajes existentes en el momento de su lanzamiento, Java ha liberado, desde el principio, la memoria no utilizada automáticamente. Pero eso no significa que los desarrolladores de Java no necesiten conocer los fundamentos de cómo maneja Java la memoria. Todavía puede haber fugas de memoria y cuellos de botella.
Java divide su memoria en dos segmentos:
| Pila | Instancias, variables... tus datos |
| No apilable/permanente | Código, metadatos... para la JVM |
Para ocuparnos de la memoria en Java, debemos centrarnos en el montón. Se divide en dos generaciones en función de su tiempo de vida: joven y vieja. La generación joven (también conocida como el vivero) contiene objetos de vida corta. La generación vieja contiene estructuras que han sobrevivido más tiempo.
La generación joven está dividida en dos:
| Edén | Dónde se crean los objetos |
| Superviviente | Un estado intermedio, limbo, a través de por el que pasará una instancia al pasar del espacio joven al viejo. |
El Recolector de Basura
El recolector de basura (GC) es el sistema que limpia la memoria. Existen ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.