Book Image

Java 9: Building Robust Modular Applications

By : Dr. Edward Lavieri, Peter Verhas, Jason Lee
Book Image

Java 9: Building Robust Modular Applications

By: Dr. Edward Lavieri, Peter Verhas, Jason Lee

Overview of this book

Java 9 and its new features add to the richness of the language; Java is one of the languages most used by developers to build robust software applications. Java 9 comes with a special emphasis on modularity with its integration with Jigsaw. This course is your one-stop guide to mastering the language. You'll be provided with an overview and explanation of the new features introduced in Java 9 and the importance of the new APIs and enhancements. Some new features of Java 9 are ground-breaking; if you are an experienced programmer, you will be able to make your enterprise applications leaner by learning these new features. You'll be provided with practical guidance in applying your newly acquired knowledge of Java 9 and further information on future developments of the Java platform. This course will improve your productivity, making your applications faster. Next, you'll go on to implement everything you've learned by building 10 cool projects. You will learn to build an email filter that separates spam messages from all your inboxes, a social media aggregator app that will help you efficiently track various feeds, and a microservice for a client/server note application, to name just a few. By the end of this course, you will be well acquainted with Java 9 features and able to build your own applications and projects. This Learning Path contains the best content from the following two recently published Packt products: • Mastering Java 9 • Java 9 Programming Blueprints
Table of Contents (33 chapters)
Title Page - Courses
Packt Upsell - Courses
Taking Notes with Monumentum

Techniques for avoiding microbenchmarking pitfalls

Microbenchmarking is not something that every developer will have to worry about, but for those that do, there are several pitfalls that you should be aware of. In this section we will review the most common pitfalls and suggest strategies for avoiding them.

Power management

There are many subsystems that can be used to help you manage the balance between power and performance (that is, cpufreq). These systems can alter the state of time during benchmarks.

There are two suggested strategies to this pitfall:

  • Disable any power management systems before running tests
  • Run the benchmarks for longer periods

OS schedulers

Operating system schedulers, such as Solaris schedulers, help determine which software processes gain access to a system's resources. Use of these schedulers can result in unreliable benchmarking results.

There are two suggested strategies to this pitfall:

  • Refine your system scheduling policies
  • Run the benchmarks for longer periods