Search icon CANCEL
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Java 9 High Performance
Java 9 High Performance

Java 9 High Performance: Practical techniques and best practices for optimizing Java applications through concurrency, reactive programming, and more

Arrow left icon
Profile Icon Ramgir Profile Icon Nick Samoylov
Arrow right icon
$54.99
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3 (2 Ratings)
Paperback Nov 2017 398 pages 1st Edition
eBook
$29.99 $43.99
Paperback
$54.99
Subscription
Free Trial
Renews at $19.99p/m
Arrow left icon
Profile Icon Ramgir Profile Icon Nick Samoylov
Arrow right icon
$54.99
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3 (2 Ratings)
Paperback Nov 2017 398 pages 1st Edition
eBook
$29.99 $43.99
Paperback
$54.99
Subscription
Free Trial
Renews at $19.99p/m
eBook
$29.99 $43.99
Paperback
$54.99
Subscription
Free Trial
Renews at $19.99p/m

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Table of content icon View table of contents Preview book icon Preview Book

Java 9 High Performance

Identifying Performance Bottlenecks

Before diving deep into understanding code-related performance problems, it is important to understand the platform on which the code is going to run. This not only includes the JVM, but also the underline operating system, hardware infrastructure, and network infrastructure. You may be wondering, why should I care about that? Isn’t just focusing on the application code enough to make sure my application runs smoothly?

Unfortunately, the answer is no. No, it's not enough just to focus on improving your code. The reason is very simple--your code depends on the resources provided by JVM, operating system, and network infrastructure. When you write the REST client, you are relying on the underline network infrastructure to deliver the data. When you write the multithreaded code, you are relying on JVM and underlying operating system...

CPU infrastructure

Central Processing Unit (CPU) is an integral part of the computer system. The core responsibility of a CPU is to handle all the instructions from hardware as well as software. It is beyond the scope of this book to explore the CPU in detail; however, we will study the basic architecture and underline functioning of a CPU in very high level. This will help us to understand the areas where we need to focus on utilizing a CPU optimally. Not every part of your code will be CPU-dependent, so it is important to find these areas and use a proper coding strategy to make sure we use CPU time more efficiently.

Let's first look at the high-level architecture of CPU. If you dissect the processing of a CPU, you will notice there are two main components, one is Arithmetic Logic Unit (ALU), which is responsible for performing logical, mathematical, and comparison operations...

Memory utilization

In this section, we will explore another area which is susceptible to performance problems. More or less, each line of code is dependent on some data in the form of object, variable, and so on. Hence, JVM needs to have some type of provision to store this information so that it will be available to your code. This storage is mainly provided by the underline Operating System (OS), which is based on physical memory such as Random Access Memory (RAM) and JVM is allocated to use a portion of it. This memory space is then available to your application running inside the JVM.

There are mainly two areas which you need to focus on:

  • Heap
  • Stack

Don’t worry, we will take a closer look at these two areas, but before we jump into that, let's quickly review CPU memory that we briefly talked about in the previous section. Every time CPU executes the given instructions...

Database operations

So far we have seen various code-level optimizations related to CPU and memory that we can perform to improve an application’s performance. However, the overall performance of the application is dependent on various factors such as database, IO, and network.

In the SaaS world, almost every application out there is database dependent. This means, we need to focus on various aspects related to database optimization. Several performance issues are the result of poor architectural decisions, the wrong use of design patterns, improper database configurations, and sometimes incorrect database type selection. In this section, we will focus on identifying various database-related bottlenecks and briefly discuss the areas of improvements. Database optimization itself is a vast topic and out of the scope of this section. In order to optimize the database you need...

I/O operations

This is another area that is important from the performance optimization point of view. If you need to read or write files to your server, you need to rely on Java’s I/O APIs. The I/O operations are resource intensive and may consume a large amount of processing time. This can turn into a big performance bottleneck, and hence, it is important to tune this area to improve the overall application performance.

Most Java developers still rely on the basic I/O APIs, which are more than adequate to perform any file related operations. However, they do have some performance issues, for example, InputStream.read() performs character-by-character reading or the method Reader.read() reads one character at a time. Then there are stream-related APIs. Most of them read or write one byte at a time, which contributes to performance problems as it takes a long time to go...

Network operations

As the world is progressing toward the SaaS application's paradigm, it is imperative to pay close attention to network utilization of your program. In this typical client-server architecture, in many cases, every event is processed on the server side and the data constantly flows over the wire, across the oceans, miles away from its origin. On top of this, the world is becoming impatient regarding speed and performance. With the advent of social media and the love of video and photo sharing, data usage has sky rocketed and is using up almost all the bandwidth a user can get. Hence, it is extremely important to use network resources as efficiently as possible.

In order to squeeze every possible performance gain from the available network resources, we need to implement various strategies and design patterns. This section will highlight some of the new additions...

Summary

In this chapter, we learned about various bottlenecks which can cause performance issues. In particular, you need to focus on various areas such as CPU infrastructure, I/O operations, database operations, network utilization, and memory utilization. It is important to understand the type of operation your algorithm is performing. Based on that you need to optimize your code, so it wont take much of the resources.

In the next chapter, we will learn about the various troubleshooting and error handling techniques, logging, and then about thread dump and how to analyze it.

Left arrow icon Right arrow icon
Download code icon Download Code

Key benefits

  • Tackle all kinds of performance-related issues and streamline your development
  • Master the new features and new APIs of Java 9 to implement highly efficient and reliable codes
  • Gain an in-depth knowledge of Java application performance and obtain best results from performance testing

Description

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.

Who is this book for?

This book is for Java developers who would like to build reliable and high-performance applications. Prior Java programming knowledge is assumed.

What you will learn

  • Work with JIT compilers
  • Understand the usage of profiling tools
  • Generate JSON with code examples
  • Leverage the command-line tools to speed up application development
  • Build microservices in Java 9
  • Explore the use of APIs to improve application code
  • Speed up your application with reactive programming and concurrency
Estimated delivery fee Deliver to Ukraine

Economy delivery 10 - 13 business days

$6.95

Premium delivery 6 - 9 business days

$21.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Nov 01, 2017
Length: 398 pages
Edition : 1st
Language : English
ISBN-13 : 9781787120785
Vendor :
Oracle
Category :
Languages :

What do you get with Print?

Product feature icon Instant access to your digital eBook copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Download this book in EPUB and PDF formats
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
Estimated delivery fee Deliver to Ukraine

Economy delivery 10 - 13 business days

$6.95

Premium delivery 6 - 9 business days

$21.95
(Includes tracking information)

Product Details

Publication date : Nov 01, 2017
Length: 398 pages
Edition : 1st
Language : English
ISBN-13 : 9781787120785
Vendor :
Oracle
Category :
Languages :

Packt Subscriptions

See our plans and pricing
Modal Close icon
$19.99 billed monthly
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Simple pricing, no contract
$199.99 billed annually
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just $5 each
Feature tick icon Exclusive print discounts
$279.99 billed in 18 months
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just $5 each
Feature tick icon Exclusive print discounts

Frequently bought together


Stars icon
Total $ 158.97
Mastering Microservices with Java 9
$48.99
Java 9 High Performance
$54.99
Architecting Modern Java EE Applications
$54.99
Total $ 158.97 Stars icon

Table of Contents

11 Chapters
Learning Java 9 Underlying Performance Improvements Chevron down icon Chevron up icon
Identifying Performance Bottlenecks Chevron down icon Chevron up icon
Learning How to Troubleshoot Code Chevron down icon Chevron up icon
Learning How to Use Profiling Tools Chevron down icon Chevron up icon
Understanding Garbage Collection and Making Use of It Chevron down icon Chevron up icon
Optimizing Code with Microbenchmarking Chevron down icon Chevron up icon
Speeding Up JSON Generation Chevron down icon Chevron up icon
Tools for Higher Productivity and Faster Application Chevron down icon Chevron up icon
Multithreading and Reactive Programming Chevron down icon Chevron up icon
Microservices Chevron down icon Chevron up icon
Making Use of New APIs to Improve Your Code Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
(2 Ratings)
5 star 50%
4 star 0%
3 star 0%
2 star 0%
1 star 50%
Kaush Nov 21, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I got the Java 9 Cookbook from one of the co-authors and chanced upon this one. This is a very interesting for anyone getting their hands dirty on performance tuning stuff as well as seeking ways to improve their code. Unlike other Java performance books I have read in the past, this one is very simple to follow with examples et al. It is especially good for beginners/intermediate levels and seamlessly eases you into the tool and techniques of the trade. The best part is not just the focus on Java 9. Rather its a best practices book for writing high performant modern cloud-based microservices java apps.
Amazon Verified review Amazon
Amazon Customer Feb 23, 2020
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Book was poorly written and had very less technical content.
Amazon Verified review Amazon
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the delivery time and cost of print book? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela
What is custom duty/charge? Chevron down icon Chevron up icon

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order? Chevron down icon Chevron up icon

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges? Chevron down icon Chevron up icon

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

  • If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
  • Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.
How can I cancel my order? Chevron down icon Chevron up icon

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact customercare@packt.com with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at customercare@packt.com using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy? Chevron down icon Chevron up icon

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on customercare@packt.com with the order number and issue details as explained below:

  1. If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on customercare@packt.com within one hour of placing the order and we will replace/refund you the item cost.
  2. Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on customercare@packt.com who will be able to resolve this issue for you.
  3. You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
  4. Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
  5. If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
  6. Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on customercare@packt.com within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged? Chevron down icon Chevron up icon

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use? Chevron down icon Chevron up icon

You can pay with the following card types:

  1. Visa Debit
  2. Visa Credit
  3. MasterCard
  4. PayPal
What is the delivery time and cost of print books? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela