CentOS High Availability
The high performance and stability of CentOS Linux are the key factors that make CentOS Linux the right Linux distribution to build high availability solutions on. This book introduces you to high availability before briefly walking you through the cluster stack and its layers. The book is then divided into two parts, part A and part B, based on CentOS versions 6 and 7 respectively. Each part begins with the installation and configuration of the Corosync cluster messaging software with CMAN or with the Pacemaker cluster resource management software. You will also be introduced to cluster service configuration and cluster service management before you configure fencing or STONITH on CentOS 6 and CentOS 7. By the end of this book, you will have the skills required to independently design, implement, and maintain a CentOS high availability multinode cluster environment. ...
The high performance and stability of CentOS Linux are the key factors that make CentOS Linux the right Linux distribution to build high availability solutions on. This book introduces you to high availability before briefly walking you through the cluster stack and its layers. The book is then divided into two parts, part A and part B, based on CentOS versions 6 and 7 respectively. Each part begins with the installation and configuration of the Corosync cluster messaging software with CMAN or with the Pacemaker cluster resource management software. You will also be introduced to cluster service configuration and cluster service management before you configure fencing or STONITH on CentOS 6 and CentOS 7. By the end of this book, you will have the skills required to independently design, implement, and maintain a CentOS high availability multinode cluster environment. ...
Clojure Web Development Essentials
Functional programming enables developers to create and deploy applications quickly and easily. Using the Clojure programming language and the Leiningen build tool, this book teaches you how to leverage various Clojure libraries into the building blocks of a web-based application. We'll start by generating a new, fully runnable, baseline web application using the Leiningen Luminus template. From there we'll examine the different pieces that compose our application, and learn the basics of the underlying Ring framework. Subsequent chapters will focus on each technology and leverage those technologies to build additional functionality into our application. You'll learn how to validate user submitted data, authentication, account creation, how to interact with a database, and more. Finally, we'll create an environment configuration and deploy our app. By the end of this book you'll have created a full fledged application from start to finish, and you'll have the requisite skills to ...
Functional programming enables developers to create and deploy applications quickly and easily. Using the Clojure programming language and the Leiningen build tool, this book teaches you how to leverage various Clojure libraries into the building blocks of a web-based application. We'll start by generating a new, fully runnable, baseline web application using the Leiningen Luminus template. From there we'll examine the different pieces that compose our application, and learn the basics of the underlying Ring framework. Subsequent chapters will focus on each technology and leverage those technologies to build additional functionality into our application. You'll learn how to validate user submitted data, authentication, account creation, how to interact with a database, and more. Finally, we'll create an environment configuration and deploy our app. By the end of this book you'll have created a full fledged application from start to finish, and you'll have the requisite skills to ...
Cocos2d-x by Example, 2nd Edition
Upgraded and updated, the powerful and popular open source framework Cocos2d-x is better than ever. Through step-by-step tutorials, you'll learn how to take complete advantage of the framework. You'll learn how to add animations and special effects, implement a physics engine, optimize your games, prepare a project for multiple devices, and develop game ideas from the test version to a finished project. Most importantly, this book provides you with the accumulated knowledge of thousands of game developers, all packed into one easy-to-use and proven framework that will save time and strenuous thinking! ...
Upgraded and updated, the powerful and popular open source framework Cocos2d-x is better than ever. Through step-by-step tutorials, you'll learn how to take complete advantage of the framework. You'll learn how to add animations and special effects, implement a physics engine, optimize your games, prepare a project for multiple devices, and develop game ideas from the test version to a finished project. Most importantly, this book provides you with the accumulated knowledge of thousands of game developers, all packed into one easy-to-use and proven framework that will save time and strenuous thinking! ...
Couchbase Essentials
Couchbase is an extremely fast, flexible, and highly scalable database that applies MapReduce techniques and patterns to find data. Whether you need to store unstructured data or be able to store and retrieve vast amounts of data quickly, Couchbase Server is your database! This book gives you enough information to successfully set up a Couchbase cluster and provides details on basic server maintenance. It then goes on to give you a detailed overview of how to program against Couchbase Server using both its key/value features and its document capabilities. It also introduces you to the concept of creating views using Couchbase's implementation of MapReduce. This book will then conclude with a walkthrough of building an actual application from scratch using Couchbase. ...
Couchbase is an extremely fast, flexible, and highly scalable database that applies MapReduce techniques and patterns to find data. Whether you need to store unstructured data or be able to store and retrieve vast amounts of data quickly, Couchbase Server is your database! This book gives you enough information to successfully set up a Couchbase cluster and provides details on basic server maintenance. It then goes on to give you a detailed overview of how to program against Couchbase Server using both its key/value features and its document capabilities. It also introduces you to the concept of creating views using Couchbase's implementation of MapReduce. This book will then conclude with a walkthrough of building an actual application from scratch using Couchbase. ...
Data Manipulation with R, 2nd Edition
This book starts with the installation of R and how to go about using R and its libraries. We then discuss the mode of R objects and its classes and then highlight different R data types with their basic operations. The primary focus on group-wise data manipulation with the split-apply-combine strategy has been explained with specific examples. The book also contains coverage of some specific libraries such as lubridate, reshape2, plyr, dplyr, stringr, and sqldf. You will not only learn about group-wise data manipulation, but also learn how to efficiently handle date, string, and factor variables along with different layouts of datasets using the reshape2 package. By the end of this book, you will have learned about text manipulation using stringr, how to extract data from twitter using twitteR library, how to clean raw data, and how to structure your raw data for data mining. ...
This book starts with the installation of R and how to go about using R and its libraries. We then discuss the mode of R objects and its classes and then highlight different R data types with their basic operations. The primary focus on group-wise data manipulation with the split-apply-combine strategy has been explained with specific examples. The book also contains coverage of some specific libraries such as lubridate, reshape2, plyr, dplyr, stringr, and sqldf. You will not only learn about group-wise data manipulation, but also learn how to efficiently handle date, string, and factor variables along with different layouts of datasets using the reshape2 package. By the end of this book, you will have learned about text manipulation using stringr, how to extract data from twitter using twitteR library, how to clean raw data, and how to structure your raw data for data mining. ...
Drupal 8 Configuration Management
Drupal 8 Configuration Management will teach you everything you need to know about the Configuration Management system and get you started with using its features quickly. For more advanced users, the book explains how to use the API to add custom configuration and how to upgrade custom modules to use the new Configuration Management system, covering some essential tools and best practices. It will teach you to write schema files for custom configuration and upgrade modules to the new Configuration Management system. Additionally, you will learn how to migrate configuration from Drupal 6 and 7 to Drupal 8 and how to manage configuration for multilingual websites. ...
Drupal 8 Configuration Management will teach you everything you need to know about the Configuration Management system and get you started with using its features quickly. For more advanced users, the book explains how to use the API to add custom configuration and how to upgrade custom modules to use the new Configuration Management system, covering some essential tools and best practices. It will teach you to write schema files for custom configuration and upgrade modules to the new Configuration Management system. Additionally, you will learn how to migrate configuration from Drupal 6 and 7 to Drupal 8 and how to manage configuration for multilingual websites. ...
edX E-Learning Course Development
edX is an open source learning management system (LMS) and course-authoring tool that educational institutions and private organizations can use to create massive online open courses (MOOCs) and small private online courses (SPOCs). This book walks you through the eight essential steps you will take to create your first edX course while teaching you tools and techniques you need to know as an edX instructor. Organized sequentially, each chapter represents a stage in your curriculum development and implementation process. We begin with an overview of MOOCs and the history of edX; detail curriculum development and video production best practices; explore options for exercises and assessments; address your course's administrative options; and then review your role as a facilitator. Lastly, we suggest a strategy to market your course with traditional tools, edX options, and social media. ...
edX is an open source learning management system (LMS) and course-authoring tool that educational institutions and private organizations can use to create massive online open courses (MOOCs) and small private online courses (SPOCs). This book walks you through the eight essential steps you will take to create your first edX course while teaching you tools and techniques you need to know as an edX instructor. Organized sequentially, each chapter represents a stage in your curriculum development and implementation process. We begin with an overview of MOOCs and the history of edX; detail curriculum development and video production best practices; explore options for exercises and assessments; address your course's administrative options; and then review your role as a facilitator. Lastly, we suggest a strategy to market your course with traditional tools, edX options, and social media. ...
Elasticsearch Blueprints
Elasticsearch is a distributed search server similar to Apache Solr with a focus on large datasets, schemaless setup, and high availability. Utilizing the Apache Lucene library (also used in Apache Solr), Elasticsearch enables powerful full-text search, as well as autocomplete "morelikethis" search, multilingual functionality, and an extensive search query DSL. This book starts with the creation of a Google-like web search service, enabling you to generate your own search results. You will then learn how an e-commerce website can be built using Elasticsearch. We will discuss various approaches in getting relevant content up the results, such as relevancy based on how well a query matched the text, time-based recent documents, geographically nearer items, and other frequently used approaches. Finally, the book will cover various geocapabilities of Elasticsearch to make your searches similar to real-world scenarios. ...
Elasticsearch is a distributed search server similar to Apache Solr with a focus on large datasets, schemaless setup, and high availability. Utilizing the Apache Lucene library (also used in Apache Solr), Elasticsearch enables powerful full-text search, as well as autocomplete "morelikethis" search, multilingual functionality, and an extensive search query DSL. This book starts with the creation of a Google-like web search service, enabling you to generate your own search results. You will then learn how an e-commerce website can be built using Elasticsearch. We will discuss various approaches in getting relevant content up the results, such as relevancy based on how well a query matched the text, time-based recent documents, geographically nearer items, and other frequently used approaches. Finally, the book will cover various geocapabilities of Elasticsearch to make your searches similar to real-world scenarios. ...
FreeSWITCH 1.6 Cookbook
FreeSWITCH is an open source carrier-grade telephony platform designed to facilitate the creation of voice, chat, and video applications, via phones and web browsers. It is scalable, carrier-ready, and easy-to-program for converged communication and VoIP. The technology serves SIP, WebRTC, PSTN, FAX, PBX, VERTO, and all the relevant channels essential to stay connected in today's world. In the FreeSWITCH 1.6 Cookbook, members of the FreeSWITCH development team share some of their hard-earned knowledge with you. Use this knowledge to improve and expand your FreeSWITCH installations. ...
FreeSWITCH is an open source carrier-grade telephony platform designed to facilitate the creation of voice, chat, and video applications, via phones and web browsers. It is scalable, carrier-ready, and easy-to-program for converged communication and VoIP. The technology serves SIP, WebRTC, PSTN, FAX, PBX, VERTO, and all the relevant channels essential to stay connected in today's world. In the FreeSWITCH 1.6 Cookbook, members of the FreeSWITCH development team share some of their hard-earned knowledge with you. Use this knowledge to improve and expand your FreeSWITCH installations. ...
Game Development with Swift
Apple's new programming language, Swift, is fast, safe, accessible - the perfect choice for game development! Packed with best practices and easy-to-use examples, this book leads you step by step through the development of your first Swift game. The book starts by introducing Swift's best features for game development. Then, you will learn how to animate sprites and textures. Along the way, you will master the physics framework, add the player character and NPCs, and implement controls. Towards the end of the book, you will polish your game with fun menus, integrate with Apple Game Center for leaderboards and achievements, and then finally, learn how to publish your finished games to the App Store. By the end of this book, you will be able to create your own iOS games using Swift and SpriteKit. ...
Apple's new programming language, Swift, is fast, safe, accessible - the perfect choice for game development! Packed with best practices and easy-to-use examples, this book leads you step by step through the development of your first Swift game. The book starts by introducing Swift's best features for game development. Then, you will learn how to animate sprites and textures. Along the way, you will master the physics framework, add the player character and NPCs, and implement controls. Towards the end of the book, you will polish your game with fun menus, integrate with Apple Game Center for leaderboards and achievements, and then finally, learn how to publish your finished games to the App Store. By the end of this book, you will be able to create your own iOS games using Swift and SpriteKit. ...