The Z Garbage Collector

Name: The Z Garbage Collector
Price: 204.75 AUD
Availability: PreOrder

In JDK 25

By: Erik Osterlund

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Paperback | 22 May 2026 | Edition Number 1

At a Glance

Format
Paperback

Dimensions(cm)
25.4 x 17.8

Paperback

$204.75

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Available: 22nd May 2026

Preorder. Will ship when available.

This book explains how the Z Garbage Collector was designed, why it was designed this way, the common pitfalls to avoid when using ZGC in JDK 25 and how to get useful information from the garbage collector.

Java is one of the most widely used programming languages in the world. It is a memory safe language that completely relies on a good garbage collection (GC) algorithm to work well. The Z Garbage Collector of OpenJDK is arguably the most sophisticated production GC algorithm for any managed language runtime. The book goes into detail and covers core algorithm concepts of ZGC: coloured pointers, GC barriers, concurrent marking, concurrent relocation, concurrent stack scanning, concurrent root scanning, concurrent class unloading, concurrent generational collection, as well as showing how all of this works. It explains how the JVM evolved certain features to be able to accommodate ZGC, and covers the importance of each of the various GC heuristics and how they function.

With a unique angle right between academia and industry, this book is useful for computer science students and Java developers alike.

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