Book Image

Java 9 High Performance

By : Mayur Ramgir, Nick Samoylov
Book Image

Java 9 High Performance

By: Mayur Ramgir, Nick Samoylov

Overview of this book

Finally, a book that focuses on the practicalities rather than theory of Java application performance tuning. This book will be your one-stop guide to optimize the performance of your Java applications. We will begin by understanding the new features and APIs of Java 9. You will then be taught the practicalities of Java application performance tuning, how to make the best use of garbage collector, and find out how to optimize code with microbenchmarking. Moving ahead, you will be introduced to multithreading and learning about concurrent programming with Java 9 to build highly concurrent and efficient applications. You will learn how to fine tune your Java code for best results. You will discover techniques on how to benchmark performance and reduce various bottlenecks in your applications. We'll also cover best practices of Java programming that will help you improve the quality of your codebase. By the end of the book, you will be armed with the knowledge to build and deploy efficient, scalable, and concurrent applications in Java.
Table of Contents (11 chapters)

Filtering streams

The java.util.streams.Stream interface was introduced in Java 8. It emits elements and supports a variety of operations that perform computations based on these elements. A stream can be finite or infinite, slow or fast emitting. Naturally, there is always a concern that the rate of the newly emitted elements may be higher than the rate of the processing. Besides, the ability to keep up with the input reflects the application's performance. The Stream implementations address the backpressure (when the rate of the element processing is lower than their emitting rate) by adjusting the emitting and processing rates using a buffer and various other techniques. In addition, it is always helpful if an application developer makes sure that the decision about processing or skipping each particular element is made as early as possible so that the processing resources...