March 2019
Intermediate to advanced
242 pages
6h 21m
English
Content preview from Java 11 and 12 – New Features
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What is CDS?
A commercial feature with Oracle JVM since Java 8, CDS helps to reduce the start up time of a Java application and its memory footprint. This is especially notable when you are working with multiple JVMs.
On startup, JVM prepares the environment for execution. It includes bytecode loading, verification, linking, and initializing of the core classes and interfaces. The classes and interfaces are combed into the runtime state of the JVM so that they can be executed. It also includes method areas and constant pools.
These set of core classes and interfaces don't change unless you update your JVM. So, every time you start your JVM, it performs the same steps to get the environment up for execution. Imagine that you could dump the ...
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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.