The Art of Writing Efficient Programs. An advanced programmer's guide to efficient hardware utilization and compiler optimizations using C++ examples

Fedor G. Pikus

The great free lunch of performance taking care of itself is over. Until recently, programs got faster by themselves as CPUs were upgraded, but that doesn't happen anymore. The clock frequency of new processors has almost peaked, and while new architectures provide small improvements to existing programs, this only helps slightly. To write efficient software, you now have to know how to program by making good use of the available computing resources, and this book will teach you how to do that.The Art of Efficient Programming covers all the major aspects of writing efficient programs, such as using CPU resources and memory efficiently, avoiding unnecessary computations, measuring performance, and how to put concurrency and multithreading to good use. You'll also learn about compiler optimizations and how to use the programming language (C++) more efficiently. Finally, you'll understand how design decisions impact performance.By the end of this book, you'll not only have enough knowledge of processors and compilers to write efficient programs, but you'll also be able to understand which techniques to use and what to measure while improving performance. At its core, this book is about learning how to learn.

Implementing Event-Driven Microservices Architecture in .NET 7. Develop event-based distributed apps that can scale with ever-changing business demands using C# 11 and .NET 7

Donovan Brown, Joshua Garverick, Omar Dean McIver

This book will guide you through various hands-on practical examples for implementing event-driven microservices architecture using C# 11 and .NET 7. It has been divided into three distinct sections, each focusing on different aspects of this implementation.The first section will cover the new features of .NET 7 that will make developing applications using EDA patterns easier, the sample application that will be used throughout the book, and how the core tenets of domain-driven design (DDD) are implemented in .NET 7.The second section will review the various components of a local environment setup, the containerization of code, testing, deployment, and the observability of microservices using an EDA approach.The third section will guide you through the need for scalability and service resilience within the application, along with implementation details related to elastic and autoscale components. You’ll also cover how proper telemetry helps to automatically drive scaling events. In addition, the topic of observability is revisited using examples of service discovery and microservice inventories.By the end of this book, you’ll be able to identify and catalog domains, events, and bounded contexts to be used for the design and development of a resilient microservices architecture.

Matplotlib for Python Developers. Python developers who want to learn Matplotlib need look no further. This book covers it all with a practical approach including lots of code and images. Take this chance to learn 2D plotting through real-world examples

Sandro Tosi, John Hunter, Sandro Tosi

Providing appealing plots and graphs is an essential part of various fields such as scientific research, data analysis, and so on. Matplotlib, the Python 2D plotting library, is used to produce publication-quality figures in a variety of hardcopy formats and interactive environments across platforms. This book explains creating various plots, histograms, power spectra, bar charts, error charts, scatter-plots and much more using the powerful Matplotlib library to get impressive out-of-the-box results.This book gives you a comprehensive tour of the key features of the Matplotlib Python 2D plotting library, right from the simplest concepts to the most advanced topics. You will discover how easy it is to produce professional-quality plots when you have this book to hand.The book introduces the library in steps. First come the basics: introducing what the library is, its important prerequisites (and terminology), installing and configuring Matplotlib, and going through simple plots such as lines, grids, axes, and charts. Then we start with some introductory examples, and move ahead by discussing the various programming styles that Matplotlib allows, and several key features.Further, the book presents an important section on embedding applications. You will be introduced to three of the best known GUI libraries 'GTK+, Qt, and wxWidgets' and presented with the steps to implement to include Matplotlib in an application written using each of them. You will learn through an incremental approach: from a simple example that presents the peculiarities of the GUI library, to more complex ones, using GUI designer tools.Because the Web permeates all of our activities, a part of the book is dedicated to showing how Matplotlib can be used in a web environment, and another section focuses on using Matplotlib with common Python web frameworks, namely, Pylons and Django. Last, but not least, you will go through real-world examples, where you will see some real situations in which you can use Matplotlib.

jQuery 2.0 Development Cookbook. As a web developer, you can benefit greatly from this book - whatever your skill level. Learn how to build dynamic modern websites using jQuery. Packed with recipes, it will quickly take you from beginner to expert

Leon Revill

LibGDX Game Development By Example. Learn how to create your very own game using the libGDX cross-platform framework

James Cook

R Data Visualization Cookbook. Over 80 recipes to analyze data and create stunning visualizations with R

Atmajitsinh Gohil, Atmajitsingh Gohil

Linux for System Administrators. Navigate the complex landscape of the Linux OS and command line for effective administration

Viorel Rudareanu, Daniil Baturin

Linux system administration is an essential aspect of maintaining and managing Linux servers within an organization. The role of a Linux system administrator is pivotal in ensuring the smooth functioning and security of these servers, making it a critical job function for any company that relies on Linux infrastructure.This book is a comprehensive guide designed to help you build a solid foundation in Linux system administration. It takes you from the fundamentals of Linux to more advanced topics, encompassing key areas such as Linux system installation, managing user accounts and filesystems, networking fundamentals, and Linux security techniques. Additionally, the book delves into the automation of applications and infrastructure using Chef, enabling you to streamline and optimize your operations.For both newcomers getting started with Linux and professionals looking to enhance their skills, this book is an invaluable hands-on guide with a structured approach and concise explanations that make it an effective resource for quickly acquiring and reinforcing Linux system administration skills. With the help of this Linux book, you’ll be able to navigate the world of Linux administration confidently to meet the demands of your role.

Oracle Siebel CRM 8 Installation and Management. Install, configure, and manage a robust Customer Relationship Management system using Siebel CRM

Alexander Hansal

Oracle’s Siebel CRM is market-leading Customer Relationship Management software. Unmatched in functionality and scalability, Siebel enhances a company’s sales performance, improves customer satisfaction, and provides a robust Customer Relationship Management system for an organization.This practical book offers a comprehensive understanding of Siebel CRM. It is your safe vessel for navigating the deep waters of Siebel installation and system management.This book is a complete exercise in installing and managing Oracle’s Siebel CRM for your organization. You will understand the Siebel architecture and install it piece by piece. In easy-to-follow chapters, the book will guide you through the installation of Siebel server, client and third-party reporting software on Microsoft Windows and Linux, covering everything from the planning the process and software download to the installation and configuration tasks.After reading this book, you will feel fully prepared for setting up multiple servers and multi-lingual configurations. This book fosters your general understanding of the intricate features and functionality of Oracle Siebel CRM. In addition, you will learn how to support development environments and how to migrate configuration changes between environments using Application Deployment Manager.Another benefit of this book is that it teaches administrators how to establish system monitoring strategies to identify and avoid performance bottlenecks. When you have finished the book, you will feel prepared to install and manage Oracle’s Siebel CRM in a real-world environment. In addition, you will know some tricks that even seasoned experts will envy.

Web Penetration Testing with Kali Linux. Testing web security is best done through simulating an attack. Kali Linux lets you do this to professional standards and this is the book you need to be fully up-to-speed with this powerful open-source toolkit

Joseph Muniz, Aamir Lakhani, Aamir Lakhani

Kali Linux is built for professional penetration testing and security auditing. It is the next-generation of BackTrack, the most popular open-source penetration toolkit in the world. Readers will learn how to think like real attackers, exploit systems, and expose vulnerabilities.Even though web applications are developed in a very secure environment and have an intrusion detection system and firewall in place to detect and prevent any malicious activity, open ports are a pre-requisite for conducting online business. These ports serve as an open door for attackers to attack these applications. As a result, penetration testing becomes essential to test the integrity of web-applications. Web Penetration Testing with Kali Linux is a hands-on guide that will give you step-by-step methods on finding vulnerabilities and exploiting web applications.Web Penetration Testing with Kali Linux looks at the aspects of web penetration testing from the mind of an attacker. It provides real-world, practical step-by-step instructions on how to perform web penetration testing exercises.You will learn how to use network reconnaissance to pick your targets and gather information. Then, you will use server-side attacks to expose vulnerabilities in web servers and their applications. Client attacks will exploit the way end users use web applications and their workstations. You will also learn how to use open source tools to write reports and get tips on how to sell penetration tests and look out for common pitfalls.On the completion of this book, you will have the skills needed to use Kali Linux for web penetration tests and expose vulnerabilities on web applications and clients that access them.

Building Low Latency Applications with C++. Develop a complete low latency trading ecosystem from scratch using modern C++

Sourav Ghosh

C++ is meticulously designed with efficiency, performance, and flexibility as its core objectives. However, real-time low latency applications demand a distinct set of requirements, particularly in terms of performance latencies.With this book, you’ll gain insights into the performance requirements for low latency applications and the C++ features critical to achieving the required performance latencies. You’ll also solidify your understanding of the C++ principles and techniques as you build a low latency system in C++ from scratch.You’ll understand the similarities between such applications, recognize the impact of performance latencies on business, and grasp the reasons behind the extensive efforts invested in minimizing latencies. Using a step-by-step approach, you’ll embark on a low latency app development journey by building an entire electronic trading system, encompassing a matching engine, market data handlers, order gateways, and trading algorithms, all in C++. Additionally, you’ll get to grips with measuring and optimizing the performance of your trading system.By the end of this book, you’ll have a comprehensive understanding of how to design and build low latency applications in C++ from the ground up, while effectively minimizing performance latencies.

Modern Distributed Tracing in .NET. A practical guide to observability and performance analysis for microservices

Liudmila Molkova, Sergey Kanzhelev

As distributed systems become more complex and dynamic, their observability needs to grow to aid the development of holistic solutions for performance or usage analysis and debugging. Distributed tracing brings structure, correlation, causation, and consistency to your telemetry, thus allowing you to answer arbitrary questions about your system and creating a foundation for observability vendors to build visualizations and analytics.Modern Distributed Tracing in .NET is your comprehensive guide to observability that focuses on tracing and performance analysis using a combination of telemetry signals and diagnostic tools. You'll begin by learning how to instrument your apps automatically as well as manually in a vendor-neutral way. Next, you’ll explore how to produce useful traces and metrics for typical cloud patterns and get insights into your system and investigate functional, configurational, and performance issues. The book is filled with instrumentation examples that help you grasp how to enrich auto-generated telemetry or produce your own to get the level of detail your system needs, along with controlling your costs with sampling, aggregation, and verbosity.By the end of this book, you'll be ready to adopt and leverage tracing and other observability signals and tools and tailor them to your needs as your system evolves.

Joomla! 4 Masterclass. A practitioner’s guide to building rich and modern websites using the brand-new features of Joomla 4

Luca Marzo, Anja de Crom

Joomla has been the second-most used open-source content management system for years. It has always had many built-in features, but several of them are not very well-known in the market. This book brings to you all the major features of the Joomla 4.x series that’ll enable you to build your own website and CMS on Joomla.The book begins by introducing you to the content management features that represent the hearth of the software and show you how to structure your website content to get the most out of it. You’ll also find out how to extend your content with custom fields, go multilingual, and set up your custom workflow. As you advance, you’ll learn all about the customization of the website, introducing templates, and child templates and overrides that’ll allow you to make your site unique. The concluding chapters will take you through four different case studies, including an online learning system, a B&B booking system, and corporate and editorial websites to see how Joomla has been used in real life to achieve a specific goal for your clients.By the end of this book, you’ll be able to confidently build modern websites on Joomla to deliver tailor-made solutions to your clients.

Linux: Powerful Server Administration. Recipes for CentOS 7, RHEL 7, and Ubuntu Server Administration

Jonathan Hobson, William Leemans, Uday Sawant, Oliver Pelz

Linux servers are frequently selected over other server operating systems for their stability, security and flexibility advantages.This Learning Path will teach you how to get up and running with three of the most popular Linux server distros: Ubuntu Server, CentOS 7 Server, and RHEL 7 Server. We will begin with the Ubuntu Server and show you how to make the most of Ubuntu’s advanced functionalities. Moving on, we will provide you with all the knowledge that will give you access to the inner workings of the latest CentOS version 7. Finally, touching RHEL 7, we will provide you with solutions to common RHEL 7 Server challenges.This Learning Path combines some of the best that Packt has to offer in one complete, curated package. It includes content from the following Packt products:1)Ubuntu Server Cookbook2)CentOS 7 Linux Server Cookbook, Second Edition 3)Red Hat Enterprise Linux Server Cookbook

Splunk Operational Intelligence Cookbook. Transform Big Data into business-critical insights and rethink operational Intelligence with Splunk - Second Edition

Josh Diakun, Derek Mock, Paul R. Johnson

Splunk makes it easy for you to take control of your data, and with Splunk Operational Cookbook, you can be confident that you are taking advantage of the Big Data revolution and driving your business with the cutting edge of operational intelligence and business analytics. With more than 70 recipes that demonstrate all of Splunk’s features, not only will you find quick solutions to common problems, but you’ll also learn a wide range of strategies and uncover new ideas that will make you rethink what operational intelligence means to you and your organization.You’ll discover recipes on data processing, searching and reporting, dashboards, and visualizations to make data shareable, communicable, and most importantly meaningful. You’ll also find step-by-step demonstrations that walk you through building an operational intelligence application containing vital features essential to understanding data and to help you successfully integrate a data-driven way of thinking in your organization.Throughout the book, you’ll dive deeper into Splunk, explore data models and pivots to extend your intelligence capabilities, and perform advanced searching to explore your data in even more sophisticated ways. Splunk is changing the business landscape, so make sure you’re taking advantage of it.

Yii2 Application Development Cookbook. Click here to enter text. - Third Edition

Sergey Ivanov, Andrew Bogdanov, Dmitry Eliseev

Yii is a free, open source web application development framework written in PHP5 that promotes clean DRY design and encourages rapid development. It works to streamline your application development time and helps to ensure an extremely efficient, extensible, and maintainable end product. Being extremely performance optimized, Yii is a perfect choice for any size project. However, it has been built with sophisticated, enterprise applications in mind. You have full control over the configuration from head-to-toe (presentation-to-persistence) to conform to your enterprise development guidelines. It comes packaged with tools to help test and debug your application, and has clear and comprehensive documentation.This book is a collection of Yii2 recipes. Each recipe is represented as a full and independent item, which showcases solutions from real web-applications. So you can easily reproduce them in your environment and learn Yii2 fast and without tears. All recipes are explained with step-by-step code examples and clear screenshots.Yii2 is like a suit that looks great off the rack, but is also very easy to tailor to fit your needs. Virtually every component of the framework is extensible. This book will show how to use official extensions, extend any component, or write a new one.This book will help you create modern web applications quickly, and make sure they perform well using examples and business logic from real life. You will deal with the Yii command line, migrations, and assets. You will learn about role-based access, security, and deployment. We’ll show you how to easily get started, configure your environment, and be ready to write web applications efficiently and quickly.

OpenVPN 2 Cookbook. Everything you need to know to master the intricacies of OpenVPN 2 is contained in this cookbook. Packed with recipes, tips, and tricks, it’s the perfect companion for anybody wanting to build a secure virtual private network

Open VPN Solutions, Jan Just Keijser

HashiCorp Packer in Production. Efficiently manage sets of images for your digital transformation or cloud adoption journey

John Boero, Armon Dadgar

Creating machine images can be time-consuming and error-prone when done manually. HashiCorp Packer enables you to automate this process by defining the configuration in a simple, declarative syntax. This configuration is then used to create machine images for multiple environments and cloud providers.The book begins by showing you how to create your first manifest while helping you understand the available components. You’ll then configure the most common built-in builder options for Packer and use runtime provisioners to reconfigure a source image for desired tasks. You’ll also learn how to control logging for troubleshooting errors in complex builds and explore monitoring options for multiple logs at once. As you advance, you’ll build on your initial manifest for a local application that’ll easily migrate to another builder or cloud. The chapters also help you get to grips with basic container image options in different formats while scaling large builds in production. Finally, you’ll develop a life cycle and retention policy for images, automate packer builds, and protect your production environment from nefarious plugins.By the end of this book, you’ll be equipped to smoothen collaboration and reduce the risk of errors by creating machine images consistently and automatically based on your defined configuration.

Getting Started with Simulink. Written by an experienced engineer, this book will help you utilize the great user-friendly features of Simulink to advance your modeling, testing, and interfacing skills. Packed with illustrations and step-by-step walkthroughs

Luca Zamboni

Simulink is an engineer's Swiss army knife: instead of spending the day typing out complex formulas, Simulink enables you to both draw and execute them. Block after block, you can develop your ideas without struggling with obscure programming languages and you don't have to wait to debug your algorithm - just launch a simulation!Getting Started with Simulink will give you comprehensive knowledge of Simulink's capabilities. From the humble constant block to the S-function block, you will have a clear understanding of what modelling really means, without feeling that something has been left out. By the time you close the book, you'll be able to further extend your modelling skills without any help.We''ll start with a brief introduction, and immediately start placing the first blocks. Little by little, you'll build a car cruise controller model, followed by the mathematical model of a sports car in order to calibrate it. Then you'll learn how to interface your Simulink model with the external world. This book will give you an easy understanding of the tools Simulink offers you, guiding you through a complex exercise split into the three main phases of Simulink development: modelling, testing, and interfacing.

PhoneGap for Enterprise. Master the art of building secure enterprise mobile applications using PhoneGap

Kerri Shotts

Java Hibernate Cookbook. Over 50 recipes to help you build dynamic and powerful real-time Java Hibernate applications

Yogesh Prajapati, Vishal Ranapariya

This book will provide a useful hands-on guide to Hibernate to accomplish the development of a real-time Hibernate application.We will start with the basics of Hibernate, which include setting up Hibernate – the pre-requisites and multiple ways of configuring Hibernate using Java. We will then dive deep into the fundamentals of Hibernate such as SessionFactory, session, criteria, working with objects and criteria. This will help a developer have a better understanding of how Hibernate works and what needs to be done to run a Hibernate application. Moving on, we will learn how to work with annotations, associations and collections. In the final chapters, we will see explore querying, advanced Hibernate concepts and integration with other frameworks.

IBM WebSphere Application Server 8.0 Administration Guide. Learn to administer a reliable, secure, and scalable environment for running applications with WebSphere Application Server 8.0

Steve Robinson

Administrators require a secure, scalable, and resilient application infrastructure to support the development of JEE applications and SOA services. IBM’s WebSphere Application Server is optimized for this task, and this book will ensure that you can utilize all that this tool has to offer with the exciting new features of IBM WebSphere Application Server 8.0.IBM WebSphere Application Server 8.0 Administration Guide is fully revised with details of the new functionality of WebSphere Application Server 8.0, including the new installation GUI, managed deployment, and HPEL. With this book in hand, you will be equipped to provide an innovative, performance-based foundation to build, run, and manage JEE applications and SOA services.IBM WebSphere Application Server 8.0 has been tuned for higher performance out of the box, and numerous enhancements have been made to give you as an administrator more options for increasing runtime performance. This book will allow you to utilize all of these features, including HPEL logging and disabling WebSphere MQ Messaging. You will be taken through how to configure and prepare WebSphere resources for your application deployments, and by the end of IBM WebSphere Application Server 8.0 Administration Guide, you will be able to successfully manage and tune your WebSphere 8.0 implementation.

Python Automation Cookbook. 75 Python automation recipes for web scraping; data wrangling; and Excel, report, and email processing - Second Edition

Jaime Buelta

In this updated and extended version of Python Automation Cookbook, each chapter now comprises the newest recipes and is revised to align with Python 3.8 and higher. The book includes three new chapters that focus on using Python for test automation, machine learning projects, and for working with messy data.This edition will enable you to develop a sharp understanding of the fundamentals required to automate business processes through real-world tasks, such as developing your first web scraping application, analyzing information to generate spreadsheet reports with graphs, and communicating with automatically generated emails.Once you grasp the basics, you will acquire the practical knowledge to create stunning graphs and charts using Matplotlib, generate rich graphics with relevant information, automate marketing campaigns, build machine learning projects, and execute debugging techniques.By the end of this book, you will be proficient in identifying monotonous tasks and resolving process inefficiencies to produce superior and reliable systems.

jOOQ Masterclass. A practical guide for Java developers to write SQL queries for complex database interactions

Anghel Leonard, Lukas Eder

jOOQ is an excellent query builder framework that allows you to emulate database-specific SQL statements using a fluent, intuitive, and flexible DSL API. jOOQ is fully capable of handling the most complex SQL in more than 30 different database dialects.jOOQ Masterclass covers jOOQ from beginner to expert level using examples (for MySQL, PostgreSQL, SQL Server, and Oracle) that show you how jOOQ is a mature and complete solution for implementing the persistence layer. You’ll learn how to use jOOQ in Spring Boot apps as a replacement for SpringTemplate and Spring Data JPA. Next, you’ll unleash jOOQ type-safe queries and CRUD operations via jOOQ’s records, converters, bindings, types, mappers, multi-tenancy, logging, and testing. Later, the book shows you how to use jOOQ to exploit powerful SQL features such as UDTs, embeddable types, embedded keys, and more. As you progress, you’ll cover trending topics such as identifiers, batching, lazy loading, pagination, and HTTP long conversations. For implementation purposes, the jOOQ examples explained in this book are written in the Spring Boot context for Maven/Gradle against MySQL, Postgres, SQL Server, and Oracle.By the end of this book, you’ll be a jOOQ power user capable of integrating jOOQ in the most modern and sophisticated apps including enterprise apps, microservices, and so on.

Joomla! 1.5 Content Administration. Keep your web site up-to-date and maintain content and users with ease

Tracey Porst, Chris Davenport, Tracey Porst

Often a company hires consultants or web developers to build a Joomla! web site, and then takes over running the site in house. If you are a content administrator concerned with creating and maintaining the 'product' of a content management site, and not modifying its code, this book is all you need.This practical, hands-on guide will give you all the knowledge needed to maintain and edit your web site as a content-rich place that visitors return to again and again. There are many books available to help you administer a Joomla! site, but this is the only one specifically for Content Administrators. It is a quick-start guide that best serves content administrators and editors and doesn't cover designing or creating a site. However, anybody who has built their own site but needs help with article management, multimedia management, search engine optimization, and more will also benefit from it.To explain all the features, we will work on developing and maintaining the content and structure of a fledgling web site for a fictitious company The Party People. Beginning with the basics, which includes an exploration of how to access and navigate around the administration interface, you will move into managing and creating content, including adding images, video, and audio material. There is advice on how to make the most of your multimedia material and how to choose the right file type for your needs.As your skills develop, you will work through techniques for making the site search-engine friendly and securing it against potential malicious attacks. All of these techniques and processes are explained step by step, and by the end of the book you will be able to take advantage your new-found knowledge and skills and maintain your Joomla! site with ease. Keeping your content fresh and engaging becomes easy, once you know how and that's what this book aims to do. It will help you become a more effective and efficient manager of Joomla!-based web sites.