March 2019
Intermediate to advanced
242 pages
6h 21m
English
Content preview from Java 11 and 12 – New Features
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Promptly return unused committed memory from G1
An additional enhancement to G1 GC—to return the Java heap memory to the Operating System (OS) when idle. This enhancement is most likely to be triggered by the increase in container environments that are used to run applications on the JVM.
Prior to Java 12, G1 returned memory from the Java heap in two cases—while performing a full GC or during a concurrent cycle. However, neither of these instances happen very often. In fact, G1 performs a full GC as its last resort to free up memory. A concurrent cycle is subjected to the Java heap allocation and occupancy.
This GC behavior has multiple disadvantages—organizations pay more for the memory even though it isn't used in an efficient manner in ...
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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.
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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.