Ebook Free Optimizing Java: Practical Techniques for Improving JVM Application Performance
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Optimizing Java: Practical Techniques for Improving JVM Application Performance
Ebook Free Optimizing Java: Practical Techniques for Improving JVM Application Performance
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About the Author
Ben Evans is the Co-founder and Technology Fellow of jClarity, a startup which delivers performance tools to help development & ops teams. He helps to organise the London Java Community, and represents them on the Java Community Process Executive Committee where he works to define new standards for the Java ecosystem. He is a Java Champion; JavaOne Rockstar; co-author of “The Well-Grounded Java Developer” and a regular public speaker on the Java platform, performance, concurrency, and related topics.James (Jim) Gough is a Java developer and author. Jim first became interested in Java during his degree program at the University of Warwick, and after graduating he became a member of the London Java Community. Community has remained central to Jim’s contributions, which include working on the design and testing of JSR-310 and serving on the Java Community Process Executive Committee for several years. Jim is a regular conference speaker and is currently focused on building customer facing technology at Morgan Stanley. He spent four years teaching Java and C++ in various countries around the world.Chris Newland has been working with Java since 1999 when he started his career using the language to implement intelligent agent systems. He is now a senior developer and team lead at ADVFN using Java to process stock market data in real time. Chris is the inventor of JITWatch (https://github.com/AdoptOpenJDK/jitwatch), an open-source visualiser for understanding the Just-In-Time (JIT) compilation decisions made by the HotSpot JVM. He is a keen JavaFX supporter and runs a community OpenJFX build server at https://chriswhocodes.com. Follow him on Twitter@chriswhocodes
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Product details
Paperback: 440 pages
Publisher: O'Reilly Media; 1 edition (May 11, 2018)
Language: English
ISBN-10: 1492025798
ISBN-13: 978-1492025795
Product Dimensions:
7 x 0.9 x 9.1 inches
Shipping Weight: 1.6 pounds (View shipping rates and policies)
Average Customer Review:
3.9 out of 5 stars
4 customer reviews
Amazon Best Sellers Rank:
#291,639 in Books (See Top 100 in Books)
Very good book to understand more deeply how JVM works internally, not only GC. Many books focus mainly on GC, but this one describes many more aspects of JVM internals (such as threading, JVM internal memory representation, bytecode, JIT compilers etc). Moreover, the book contains overview of many tools which can help you on a daily basis work with JVM. If you have read Java Performance: The Definitive Guide: Getting the Most Out of Your Code you won't regret reading this one as well.
The book is informative from an elementary perspective, however it is extremely inconsistent. There are many principles that one should know before buying this book since it is not about them. On the important material it is covering, it does reveal to the knowledgeable reader many important issues with Java performance. However, please note the book does not look as if the authors proof read their work. It appears more as a draft. It's FULL of incomplete sentences, unfinished paragraphs!!! and worse... One paragraph will make a point, and the next will contradict that point. Many critical and important issues are missed due to its incompleteness, thus leaving the reader hanging and with more questions than they started with. It is unfinished. It would also be a good idea and is an expectation for this price, if they walked the reader through using many of the tools they mention. However, due to the current state of the book... proof reading would seem to be the priority and statements in the description should be made that it does not teach the reader how to use the tools. They do discuss tools and what they help identify, but it is not clear how to use them. Definitely! Not worth the money ($52) in it's current state. O'Reilly lost several points on this one. This book gets a C.
Most of this book is focused on general performance concepts and on how the JVM works, and should therefore also be useful to anyone not using Java (the language), but running their code on a JVM. It's not a cookbook for diagnosing and solving specific performance problems, or a convenient collection of performance hacks. There is some discussion of tools for benchmarking, monitoring, and profiling, but isn't very comprehensive or detailed, just enough to be a starting point for your own research.
I hadn't read the subtitle of “Optimizing Java†so I didn't know it was about JVM performance vs application level tricks. That turned out to be a pleasant surprise as I learned more.I learned a good number of things. From the fun (CAFEDADA bytecode for modules) to the practical (tools for looking at JVM resources)I've heard a talk about garbage collection a few times now. G1GC isn't easy to understand. Between reading this book and hearing one more talk on it, the concepts finally clicked.I also learned a lot about modern hardware vs what I learned in school. And what book isn't made better by a ninja quote?There were some API level concepts like why toUpperCase() is so complicated to implement. Along with warnings about premature optimization.This is the first O'Reilly book that I've read that is in color. It definitely made the graphs better.Disclosure: I received a copy of this book from the publisher in exchange for writing this review on behalf of CodeRanch.
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