October 2024
Intermediate to advanced
270 pages
8h 13m
Spanish
Content preview from 97 cosas que todo programador Java debe saber
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.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.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.
Capítulo 41. Programación Java desde la perspectiva del rendimiento de la JVM
Este trabajo se ha traducido utilizando IA. Agradecemos tus opiniones y comentarios: translation-feedback@oreilly.com
Monica Beckwith
Consejo nº 1: No te obsesiones con la basura
Me parece que a veces los desarrolladores Java se obsesionan con la cantidad de basura que producen sus aplicaciones. Muy pocos casos justifican este tipo de obsesión. Un recolector de basura (GC) ayuda a la Máquina Virtual Java (JVM) en la gestión de la memoria. Para OpenJDK HotSpot VM, el GC junto con el compilador dinámico por niveles justo a tiempo (JIT) (cliente (C1) + clase servidor (C2)) y el intérprete constituyen su motor de ejecución. Hay un montón de optimizaciones que un compilador dinámico puede realizar en tu nombre. Por ejemplo, C2 puede utilizar la predicción dinámica de ramas y tener una probabilidad ("siempre" o "nunca") para las ramas de código tomadas (o no). Del mismo modo, el C2 destaca en optimizaciones relacionadas con constantes, bucles, copias, desoptimizaciones, etc.
Confía en el compilador adaptativo, pero, en caso de duda, verifica utilizando la "serviciabilidad", la "observabilidad", el registro y todas las demás herramientas de este tipo de las que disponemos gracias a nuestro rico ecosistema.
Lo que le importa a un GC es la vida/edad de un objeto, su "popularidad", el "tamaño del conjunto vivo" ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.