Java · High-Performance Apps with Java 9 by Samoylov, Nick -- Read -- Imperial Library of Trantor

Index

Java: High-Performance Apps with Java 9

Java: High-Performance Apps with Java 9 Credits

Meet Your Experts

Preface

What's in It for Me? What Will I Get from This Book? Prerequisites

1. Learning Java 9 Underlying Performance Improvements

Introducing the New Features of Java 9 Modular Development and Its Impact

Quick Introduction to Modules

String Operations Performance

Compact String

The World of Heap

Why Bother Compressing Strings?

What Did They Do? What is the Escape Route? What is the Performance Gain?

Indify String Concatenation

Invokedynamic

Storing Interned Strings in CDS Archives Concurrency Performance Compiler Improvements

Tiered Attribution Ahead-of-Time Compilation

Security Manager Improvements Graphics Rasterizers Summary Assessments

2. Tools for Higher Productivity and Faster Application

The JShell Tool Usage

Creating a JShell Session and Setting Context JShell Commands

Ahead-of-Time (AOT)

Static versus Dynamic Compilation The AOT Commands and Procedures

Summary Assessments

3. Multithreading and Reactive Programming

Prerequisites Thread Pools Monitoring Threads Sizing Thread Pool Executors Thread Synchronization Tuning JVM Reactive Programming Summary Assessments

4. Microservices

Why Microservices? Building Microservices Container-Less Deployment Self-Contained Microservices In-Container Deployment Summary Assessments

5. Making Use of New APIs to Improve Your Code

Filtering Streams

Basic Filtering

Using Other Stream Operations for Filtering

Stack-Walking APIs

Stack Analysis before Java 9 New Better Way to Walk the Stack

Convenience Factory Methods for Collections

Why New Factory Methods? The New Factory Methods in Action

CompletableFuture in Support of Asynchronous Processing

The CompletableFuture API Overview The CompletableFuture API Enhancements in Java 9 The Problem and the Solution using Future The Solution with CompletableFuture Other Useful Features of CompletableFuture

Stream API Improvements Summary Assessments

A. Assessment Answers