According to Wikipedia: "Laura Lee Hope is a pseudonym used by the Stratemeyer Syndicate for the Bobbsey Twins and several other series of children's novels. Actual writers taking up the pen of Laura Lee Hope include Edward Stratemeyer, Howard and Lilian Garis, Elizabeth Ward, Harriet (Stratemeyer) Adams, and Nancy Axelrad. Laura Lee Hope was first used as a pseudonym in 1904 for the debut of the Bobbsey Twins. Series: The Bobbsey Twins (1904-), The Outdoor Girls (23 vols. 1913-1933), The Moving Picture Girls (7 vols. 1914-1916), Bunny Brown (20 vols. 1916-1931), Six Little Bunkers (14 vols. 1918-1930), Make Believe Stories (12 vols. c. 1920-1923), Blythe Girls (12 vols. 1925-1932)."

According to Wikipedia: "Lewis "Lew" Wallace (April 10, 1827 – February 15, 1905) was a lawyer, governor, Union general in the American Civil War, American statesman, and author, best remembered for his historical novel Ben-Hur: A Tale of the Christ… Wallace's most notable service came in July 1864, at the Battle of Monocacy, part of the Valley Campaigns of 1864. Although the force under his command (amalgamated from the Middle Department) and the division of James B. Ricketts from VI Corps was defeated by Confederate General Jubal A. Early, he was able to delay Early's advance toward Washington, D.C., to the point that the city defenses had time to organize and repel Early... Wallace participated in the military commission trial of the Lincoln assassination conspirators as well as the court-martial of Henry Wirz, commandant of the Andersonville prison camp.[4] He resigned from the army on November 30, 1865.[5] Late in the war, he directed secret efforts by the government to help the Mexicans remove the French occupation forces who had seized control of Mexico in 1864. He continued in those efforts more publicly after the war and was offered a major general's commission in the Mexican army after his resignation from the U.S. Army. Multiple promises by the Mexican revolutionaries were never delivered, which forced Wallace into deep financial debt. Wallace held a number of important political posts during the 1870s and 1880s. He served as governor of New Mexico Territory from 1878 to 1881, and as U.S. Minister to the Ottoman Empire from 1881 to 1885. As governor, he offered amnesty to many men involved in the Lincoln County War; in the process he met with Billy the Kid. On March 17, 1879, the pair arranged that the Kid would act as an informant and testify against others involved in the Lincoln County War, and, in return, the Kid would be "scot free with a pardon in [his] pocket for all [his] misdeeds". But the Kid returned to his outlaw ways and Governor Wallace withdrew his offer. While serving as governor, Wallace completed the novel that made him famous: Ben-Hur: A Tale of the Christ (1880). It grew to be the best-selling American novel of the 19th century.[6] The book has never been out of print and has been filmed four times."

According to Wikipedia: "Lewis Sperry Chafer (February 27, 1871 – August 22, 1952) was the founder and first president of Dallas Theological Seminary, and an influential founding member of modern Christian Dispensationalism.

According to Wikipedia: "Baum had decided to end the Oz series with The Emerald City of Oz in 1910, after six installments over the first decade of the twentieth century. The Sea Fairies was intended to be the first in a new series of fantasy novels, which Baum and Reilly & Britton continued the next year with Sky Island. Unfortunately for author and publisher, the two volumes of the new projected series did not meet with the same success as the Oz books previously had. The first edition of The Sea Fairies sold 12,400 copies in its initial year on the market, where The Emerald City of Oz had sold 20,000. Even when Baum's books experienced a major resurgence in interest and sales in 1918, The Sea Fairies sold only 611 copies that year while the Oz books and even Baum's non-Oz works were selling thousands of copies. Once Baum returned to writing Oz books with The Patchwork Girl of Oz in 1913, the Trot series was retired — but the main characters lived on. Trot and Cap'n Bill are the main protagonists in The Scarecrow of Oz (1915) — the plot of which was reworked from the projected third book in their aborted series — and they play a significant role in The Magic of Oz (1919). Trot appears in The Lost Princess of Oz (1917) and Glinda of Oz (1920) as well."

With 23 illustrations. According to Wikipedia: "The Heptameron is a collection of 72 short stories written in French by Marguerite of Navarre (1492-1549), published posthumously in 1558. It has the form of a frame narrative and was inspired by The Decameron of Giovanni Boccaccio. It was originally intended to contain one hundred stories covering ten days just as The Decameron does, but at Marguerite’s death it was only completed as far as the second story of the eighth day. Many of the stories deal with love, lust, infidelity and other romantic and sexual matters. One was based on the life of Marguerite de La Rocque, a French noblewoman abandoned, as punishment, with her lover on an island off Quebec... Marguerite de Navarre (French: Marguerite d'Angoulême) (April 11, 1492 – December 21, 1549), also known as Marguerite of Angouleme and Margaret of Navarre, was the queen consort of King Henry II of Navarre. As patron of humanists and reformers, and as an author in her own right, she was an outstanding figure of the French Renaissance. Samuel Putnam called her "The First Modern Woman"."

According to Wikipedia: "Mary Roberts Rinehart (August 12, 1876-September 22, 1958) was a prolific author often called the American Agatha Christie. She is considered the source of the phrase "The butler did it", although she did not actually use the phrase herself, and also considered to have invented the "Had-I-But-Known" school of mystery writing.... Rinehart wrote hundreds of short stories, poems, travelogues and special articles. Many of her books and plays, such as The Bat (1920) were adapted for movies, such as The Bat (1926), The Bat Whispers (1930), and The Bat (1959). While many of her books were best-sellers, critics were most appreciative of her murder mysteries. Rinehart, in The Circular Staircase (1908), is credited with inventing the "Had-I-But-Known" school of mystery writing. The Circular Staircase is a novel in which "a middle-aged spinster is persuaded by her niece and nephew to rent a country house for the summer. The house they choose belonged to a bank defaulter who had hidden stolen securities in the walls. The gentle, peace-loving trio is plunged into a series of crimes solved with the help of the aunt. This novel is credited with being the first in the "Had-I-But-Known" school."[3] The Had-I-But-Known mystery novel is one where the principal character (frequently female) does less than sensible things in connection with a crime which have the effect of prolonging the action of the novel. Ogden Nash parodied the school in his poem Don't Guess Let Me Tell You: "Sometimes the Had I But Known then what I know now I could have saved at least three lives by revealing to the Inspector the conversation I heard through that fortuitous hole in the floor." The phrase "The butler did it", which has become a cliché, came from Rinehart's novel The Door, in which the butler actually did do it, although that exact phrase does not actually appear in the work."

According to Wikipedia: "Mary Roberts Rinehart (August 12, 1876-September 22, 1958) was a prolific author often called the American Agatha Christie.[1] She is considered the source of the phrase "The butler did it", although she did not actually use the phrase herself, and also considered to have invented the "Had-I-But-Known" school of mystery writing.... Rinehart wrote hundreds of short stories, poems, travelogues and special articles. Many of her books and plays, such as The Bat (1920) were adapted for movies, such as The Bat (1926), The Bat Whispers (1930), and The Bat (1959). While many of her books were best-sellers, critics were most appreciative of her murder mysteries. Rinehart, in The Circular Staircase (1908), is credited with inventing the "Had-I-But-Known" school of mystery writing. The Circular Staircase is a novel in which "a middle-aged spinster is persuaded by her niece and nephew to rent a country house for the summer. The house they choose belonged to a bank defaulter who had hidden stolen securities in the walls. The gentle, peace-loving trio is plunged into a series of crimes solved with the help of the aunt. This novel is credited with being the first in the "Had-I-But-Known" school."[3] The Had-I-But-Known mystery novel is one where the principal character (frequently female) does less than sensible things in connection with a crime which have the effect of prolonging the action of the novel. Ogden Nash parodied the school in his poem Don't Guess Let Me Tell You: "Sometimes the Had I But Known then what I know now I could have saved at least three lives by revealing to the Inspector the conversation I heard through that fortuitous hole in the floor." The phrase "The butler did it", which has become a cliché, came from Rinehart's novel The Door, in which the butler actually did do it, although that exact phrase does not actually appear in the work."

According to Wikipedia: "Nathaniel "Nat" Turner (October 2, 1800 – November 11, 1831) was an American slave who led a slave rebellion in Virginia on August 21, 1831 that resulted in 56 deaths among their victims, the largest number of white fatalities to occur in one uprising in the antebellum southern United States. He gathered supporters in Southampton County, Virginia. Turner's killing of whites during the uprising makes his legacy controversial. For his actions, Turner was convicted, sentenced to death, and executed. In the aftermath, the state executed 56 blacks accused of being part of Turner's rebellion. Two hundred additional blacks were beaten and killed, as part of overreaction by white militias and mobs. Virginia and other southern states passed legislation reducing rights of free blacks and slaves. Across the South, state legislators passed new laws prohibiting education of slaves and free blacks, restricting rights of assembly and other civil rights for free blacks, and requiring white ministers to be present at black worship services."

Improve the speed of your code and optimize the performance of your apps About This Book ? Understand the common performance pitfalls and improve your application’s performance ? Get to grips with multi-threaded and asynchronous programming in C# ? Develop highly performant applications on .NET Core using microservice architecture Who This Book Is For This book is for .NET developers looking at improving the speed of their code or simply wanting to take their skills to the next level. Basic C# knowledge is assumed. What You Will Learn ? Measure application performance using BenchmarkDotNet ? Explore the techniques to write multithreaded applications ? Leverage TPL and PLinq libraries to perform asynchronous operations ? Get familiar with data structures to write optimized code ? Understand design techniques to increase your application’s performance ? Learn about memory management techniques in .NET Core ? Develop a containerized application based on microservices architecture ? Learn tools and techniques to monitor application performance In Detail While writing an application, performance is paramount. Performance tuning for realworld applications often involves activities geared toward fnding bottlenecks; however, this cannot solve the dreaded problem of slower code. If you want to improve the speed of your code and optimize an application's performance, then this book is for you. C# 7 and .NET Core 2.0 High Performance begins with an introduction to the new features of what?explaining how they help in improving an application's performance. Learn to identify the bottlenecks in writing programs and highlight common performance pitfalls, and learn strategies to detect and resolve these issues early. You will explore multithreading and asynchronous programming with .NET Core and learn the importance and effcient use of data structures. This is followed with memory management techniques and design guidelines to increase an application’s performance. Gradually, the book will show you the importance of microservices architecture for building highly performant applications and implementing resiliency and security in .NET Core. After reading this book, you will learn how to structure and build scalable, optimized, and robust applications in C#7 and .NET. Style and approach This book will be a step by step easy to follow guide with focused examples to increase performance of applications and provide optimization techniques.

Leverage the power of Python and its de facto GUI framework to build highly interactive interfaces About This Book ? The fundamentals of Python and GUI programming with Tkinter. ? Create multiple cross-platform projects by integrating a host of third-party libraries and tools. ? Build beautiful and highly-interactive user interfaces that target multiple devices. Who This Book Is For This book is for beginners to GUI programming who haven’t used Tkinter yet and are eager to start building great-looking and user-friendly GUIs. Prior knowledge of Python programming is expected. What You Will Learn ? Create a scrollable frame via theCanvas widget ? Use the pack geometry manager andFrame widget to control layout ? Learn to choose a data structurefor a game ? Group Tkinter widgets, such asbuttons, canvases, and labels ? Create a highly customizablePython editor ? Design and lay out a chat window In Detail Tkinter is a modular, cross-platform application development toolkit for Python. When developing GUI-rich applications, the most important choices are which programming language(s) and which GUI framework to use. Python and Tkinter prove to be a great combination. This book will get you familiar with Tkinter by having you create fun and interactive projects. These projects have varying degrees of complexity. We'll start with a simple project, where you'll learn the fundamentals of GUI programming and the basics of working with a Tkinter application. After getting the basics right, we'll move on to creating a project of slightly increased complexity, such as a highly customizable Python editor. In the next project, we'll crank up the complexity level to create an instant messaging app. Toward the end, we'll discuss various ways of packaging our applications so that they can be shared and installed on other machines without the user having to learn how to install and run Python programs. Style and approach Step by Step guide with real world examples

Enhance your software deployment workflow using containers About This Book ? Get up-and-running with basic to advanced concepts of Docker ? Get acquainted with concepts such as Docker containers, Docker images, orchestrators and so on. ? Practical test-based approach to learning a prominent containerization tool Who This Book Is For This book is targeted at system administrators, operations engineers, DevOps engineers, and developers or stakeholders who are interested in getting started with Docker from scratch. No prior experience with Docker Containers is required. What You Will Learn ? Containerize your traditional or microservice-based application ? Share or ship your application as an immutable container image ? Build a Docker swarm and a Kubernetes cluster in the cloud ? Run a highly distributed application using Docker Swarm or Kubernetes ? Update or rollback a distributed application with zero downtime ? Secure your applications via encapsulation, networks, and secrets ? Know your options when deploying your containerized app into the cloud In Detail Docker containers have revolutionized the software supply chain in small and big enterprises. Never before has a new technology so rapidly penetrated the top 500 enterprises worldwide. Companies that embrace containers and containerize their traditional mission-critical applications have reported savings of at least 50% in total maintenance cost and a reduction of 90% (or more) of the time required to deploy new versions of those applications. Furthermore they are benefitting from increased security just by using containers as opposed to running applications outside containers. This book starts from scratch, introducing you to Docker fundamentals and setting up an environment to work with it. Then we delve into concepts such as Docker containers, Docker images, Docker Compose, and so on. We will also cover the concepts of deployment, orchestration, networking, and security. Furthermore, we explain Docker functionalities on public clouds such as AWS. By the end of this book, you will have hands-on experience working with Docker containers and orchestrators such as SwarmKit and Kubernetes. Style and approach The simple end-to-end guide will help you learn everything about how to containerize, ship, and run both a traditional application and a modern microservice-based application on-premise or in the cloud.

Explore GIS processing and learn to work with various tools and libraries in Python. About This Book ? Analyze and process geospatial data using Python libraries such as; Anaconda, GeoPandas ? Leverage new ArcGIS API to process geospatial data for the cloud. ? Explore various Python geospatial web and machine learning frameworks. Who This Book Is For The audience for this book includes students, developers, and geospatial professionals who need a reference book that covers GIS data management, analysis, and automation techniques with code libraries built in Python 3. What You Will Learn ? Manage code libraries and abstract geospatial analysis techniques using Python 3. ? Explore popular code libraries that perform specific tasks for geospatial analysis. ? Utilize code libraries for data conversion, data management, web maps, and REST API creation. ? Learn techniques related to processing geospatial data in the cloud. ? Leverage features of Python 3 with geospatial databases such as PostGIS, SQL Server, and SpatiaLite. In Detail Python comes with a host of open source libraries and tools that help you work on professional geoprocessing tasks without investing in expensive tools. This book will introduce Python developers, both new and experienced, to a variety of new code libraries that have been developed to perform geospatial analysis, statistical analysis, and data management. This book will use examples and code snippets that will help explain how Python 3 differs from Python 2, and how these new code libraries can be used to solve age-old problems in geospatial analysis. You will begin by understanding what geoprocessing is and explore the tools and libraries that Python 3 offers. You will then learn to use Python code libraries to read and write geospatial data. You will then learn to perform geospatial queries within databases and learn PyQGIS to automate analysis within the QGIS mapping suite. Moving forward, you will explore the newly released ArcGIS API for Python and ArcGIS Online to perform geospatial analysis and create ArcGIS Online web maps. Further, you will deep dive into Python Geospatial web frameworks and learn to create a geospatial REST API. Style and approach The book takes a practical, example-driven approach to teach you GIS analysis and automation techniques with Python 3.

Practical, hands-on solutions in Python to overcome any problem in Machine Learning About This Book ? Master the advanced concepts, methodologies, and use cases of machine learning ? Build ML applications for analytics, NLP and computer vision domains ? Solve the most common problems in building machine learning models Who This Book Is For This book is for the intermediate users such as machine learning engineers, data engineers, data scientists, and more, who want to solve simple to complex machine learning problems in their day-to-day work and build powerful and efficient machine learning models. A basic understanding of the machine learning concepts and some experience with Python programming is all you need to get started with this book. What You Will Learn ? Select the right algorithm to derive the best solution in ML domains ? Perform predictive analysis effciently using ML algorithms ? Predict stock prices using the stock index value ? Perform customer analytics for an e-commerce platform ? Build recommendation engines for various domains ? Build NLP applications for the health domain ? Build language generation applications using different NLP techniques ? Build computer vision applications such as facial emotion recognition In Detail Machine learning (ML) helps you find hidden insights from your data without the need for explicit programming. This book is your key to solving any kind of ML problem you might come across in your job. You’ll encounter a set of simple to complex problems while building ML models, and you'll not only resolve these problems, but you’ll also learn how to build projects based on each problem, with a practical approach and easy-to-follow examples. The book includes a wide range of applications: from analytics and NLP, to computer vision domains. Some of the applications you will be working on include stock price prediction, a recommendation engine, building a chat-bot, a facial expression recognition system, and many more. The problem examples we cover include identifying the right algorithm for your dataset and use cases, creating and labeling datasets, getting enough clean data to carry out processing, identifying outliers, overftting datasets, hyperparameter tuning, and more. Here, you'll also learn to make more timely and accurate predictions. In addition, you'll deal with more advanced use cases, such as building a gaming bot, building an extractive summarization tool for medical documents, and you'll also tackle the problems faced while building an ML model. By the end of this book, you'll be able to fine-tune your models as per your needs to deliver maximum productivity. Style and approach This book is a step-by-step guide on how to develop machine learning applications for various domains. Each chapter of this book contains the practical guide on how to build specific machine learning applications from its base-line approach to the best possible approach. Basic necessary concepts, conman mistakes for every approach and optimization techniques are discussed for each application.

Get certified as an Azure architect by acing the 70-535 Architecting Microsoft Solutions (70-535) exam using this comprehensive guide with full coverage of the exam objectives About This Book ? Learn to successfully design and architect powerful solutions on the Azure Cloud platform ? Enhance your skills with mock tests and practice questions ? A detailed certification guide that will help you ace the 70-535 exam with confidence Who This Book Is For This book is for architects and experienced developers, who are gearing up for the 70-535 exam. Technical architects interested in learning more about designing Cloud solutions will also find this book useful. What You Will Learn ? Use Azure Virtual Machines to design effective VM deployments ? Implement architecture styles, like serverless computing and microservices ? Secure your data using different security features and design effective security strategies ? Design Azure storage solutions using various storage features ? Create identity management solutions for your applications and resources ? Architect state-of-the-art solutions using Artificial Intelligence, IoT, and Azure Media Services ? Use different automation solutions that are incorporated in the Azure platform In Detail Architecting Microsoft Azure Solutions: Exam Guide 70-535 will get Azure architects and developers up-to-date with the latest updates on Azure from an architecture and design perspective. The book includes all the topics that are still relevant from the previous 70-534 exam, and is updated with latest topics covered, including Artificial Intelligence, IoT, and architecture styles. This exam guide is divided into six parts, where the first part will give you a good understanding of how to design a compute infrastructure. It also dives into designing networking and data implementations. You will learn about designing solutions for Platform Service and operations. Next, you will be able to secure your resources and data, as well as design a mechanism for governance and policies. You will also understand the objective of designing solutions for Platform Services, by covering Artificial Intelligence, IoT, media services, and messaging solution concepts. Finally, you will cover the designing for operations objective. This objective covers application and platform monitoring, as well as designing alerting strategies and operations automation strategies. By the end of the book, you'll have met all of the exam objectives, and will have all the information you need to ace the 70-535 exam. You will also have become an expert in designing solutions on Microsoft Azure. Style and approach This book offers clear and crisp explanations of the exam objectives that will help you with all the information needed to pass the 70-535 exam. The detail oriented approach will make you an expert on designing solutions on Microsoft Azure.

Unleash the power of the Raspberry Pi 3 board to create interesting IoT projects About This Book ? Learn how to interface various sensors and actuators with the Raspberry Pi 3 and send this data to the cloud. ? Explore the possibilities offered by the IoT by using the Raspberry Pi to upload measurements to Google Docs. ? A practical guide that will help you create a Raspberry Pi robot using IoT modules. Who This Book Is For If you're a developer or electronics engineer and are curious about the Internet of Things, then this is the book for you. With only a rudimentary understanding of electronics, the Raspberry Pi, or similar credit-card sized computers, and some programming experience, you will be taught to develop state-of-the-art solutions for the Internet of Things in an instant. What You Will Learn ? Understand the concept of IoT and get familiar with the features of Raspberry Pi ? Learn to integrate sensors and actuators with the Raspberry Pi ? Communicate with cloud and Raspberry using communication protocols such as HTTP and MQTT ? Build DIY projects using Raspberry Pi, JavaScript/node.js and cloud (AWS) ? Explore the best practices to ensure the security of your connected devices In Detail This book is designed to introduce you to IoT and Raspberry Pi 3. It will help you create interesting projects, such as setting up a weather station and measuring temperature and humidity using sensors; it will also show you how to send sensor data to cloud for visualization in real-time. Then we shift our focus to leveraging IoT for accomplishing complex tasks, such as facial recognition using the Raspberry Pi camera module, AWS Rekognition, and the AWS S3 service. Furthermore, you will master security aspects by building a security surveillance system to protect your premises from intruders using Raspberry Pi, a camera, motion sensors, and AWS Cloud. We'll also create a real-world project by building a Wi-Fi – controlled robot car with Raspberry Pi using a motor driver circuit, DC motor, and a web application. This book is a must-have as it provides a practical overview of IoT’s existing architectures, communication protocols, and security threats at the software and hardware levels—security being the most important aspect of IoT. Style and approach Internet of Things with the Raspberry Pi 3 contains the tools needed to design, sense the environment, communicate over the Internet, and visualize the results.

This book teaches you everything you need to know to create stunning Vaadin applications for all your web development needs. Deep dive into advanced Vaadin concepts while creating your very own sample Vaadin application. About This Book ? A one-stop book to enhance your working knowledge with Vaadin. ? Explore and implement the architecture of Vaadin applications. ? Delve into advanced topics such as data binding, authentication and authorization to improvise your application’s performance. Who This Book Is For If you area Software developer with previous experience with Vaadin and would like to gain more comprehensive and advanced skills in Vaadin web development, then this book is for you. What You Will Learn ? Modularize your Vaadin applications with Maven ? Create high quality custom components ? Implement robust and secure authentication and authorization mechanisms ? Connect to SQL databases efficiently ? Design robust CRUD (Create, Read, Update, Delete) views ? Generate stunning reports ? Improve resource consumption by using lazy loading In Detail Vaadin is an open-source Java framework used to build modern user interfaces. Vaadin 8 simplifies application development and improves user experience. The book begins with an overview of the architecture of Vaadin applications and the way you can organize your code in modules.Then it moves to the more advanced topics about advanced topics such as internationalization, authentication, authorization, and database connectivity. The book also teaches you how to implement CRUD views, how to generate printable reports, and how to manage data with lazy loading. By the end of this book you will be able to architect, implement, and deploy stunning Vaadin applications, and have the knowledge to master web development with Vaadin. Style and approach This book follows a hands-on approach and takes the readers through practical examples of how to create and deploy Vaadin applications. This book teaches the readers about the Vaadin architecture. It then moves on to the more advanced topics about advanced topics such as internationalization, authentication, authorization, and database connectivity. This step by step guide equips the readers with all they need to know to use Vaadin for web development.

Leverage the power of PostgreSQL 10 to design, administer and maintain a high-performance database solution About This Book ? Obtain optimal PostgreSQL 10 database performance, ranging from initial design to routine maintenance ? Fine tune the performance of your queries and avoid the common pitfalls that can slow your system down ? Contains tips and tricks on scaling successful database installations, and ensuring a highly available PostgreSQL solution Who This Book Is For This book is designed for database administrators and PostgreSQL architects who already use or plan to exploit the features of PostgreSQL 10 to design and maintain a high-performance PostgreSQL database. A working knowledge of SQL, and some experience with PostgreSQL will be helpful in getting the most out of this book. What You Will Learn ? Learn best practices for scaling PostgreSQL 10 installations ? Discover the best hardware for developing high-performance PostgreSQL applications ? Benchmark your whole system – from hardware to application ? Learn by real examples how server parameters impact performance ? Discover PostgreSQL 10 features for partitioning and parallel query ? Monitor your server, both inside and outside the database ? Design and implement a good replication system on PostgreSQL 10 In Detail PostgreSQL database servers have a common set of problems that they encounter as their usage gets heavier and requirements get more demanding. Peek into the future of your PostgreSQL 10 database's problems today. Know the warning signs to look for and how to avoid the most common issues before they even happen. Surprisingly, most PostgreSQL database applications evolve in the same way—choose the right hardware, tune the operating system and server memory use, optimize queries against the database and CPUs with the right indexes, and monitor every layer, from hardware to queries, using tools from inside and outside PostgreSQL. Also, using monitoring insight, PostgreSQL database applications continuously rework the design and configuration. On reaching the limits of a single server, they break things up; connection pooling, caching, partitioning, replication, and parallel queries can all help handle increasing database workloads. By the end of this book, you will have all the knowledge you need to design, run, and manage your PostgreSQL solution while ensuring high performance and high availability Style and approach This book has been organized in such a manner that will help you understand basic PostgreSQL 10 performance tuning to an advanced-level configuration.

Design and implement scalable and maintainable RESTful solutions with Node.js 10 About This Book ? Create rich and scalable RESTful API solutions from scratch ? Explore the new features of Node.js 10, Express 4.0, and MongoDB ? Integrate MongoDB in your Node.js application to store and secure your data Who This Book Is For If you are a web developer keen to enrich your development skills to create server-side RESTful applications based on the Node.js platform, this book is for you. Some knowledge of REST would be an added advantage, but is definitely not a necessity. What You Will Learn ? Install, develop, and test your own Node.js user modules ? Understand the differences between HTTP and RESTful applications ? Use self-descriptive URLs and set accurate HTTP status codes ? Eliminate third-party dependencies in your tests with mocking ? Implement automation tests for a REST-enabled endpoint with Mocha ? Secure your services with NoSQL database integration within Node.js applications ? Integrate a simple frontend using JavaScript libraries available on a CDN server In Detail When building RESTful services, it is really important to choose the right framework. Node.js, with its asynchronous, event-driven architecture, is exactly the right choice for building RESTful APIs. This third edition of RESTful Web API Design with Node.js 10 will teach you to create scalable and rich RESTful applications based on the Node.js platform. You will be introduced to the latest NPM package handler and understand how to use it to customize your RESTful development process. You will begin by understanding the key principle that makes an HTTP application a RESTful-enabled application. After writing a simple HTTP request handler, you will create and test Node.js modules using automated tests and mock objects; explore using the NoSQL database, MongoDB, to store data; and get to grips with using self-descriptive URLs. You’ll learn to set accurate HTTP status codes along with understanding how to keep your applications backward-compatible. Also, while implementing a full-fledged RESTful service, you will use Swagger to document the API and implement automation tests for a REST-enabled endpoint with Mocha. Lastly, you will explore some authentication techniques to secure your application. Style and approach Step-by-step practical guide to building RESTful applications

The first in a stunning new series from Sunday Times bestseller, Dilly Court London, 1854: twenty-year-old Essie Chapman lives with her father in poverty stricken Limehouse, working on the river as a boatman. Her life seems set before her, never to leave this part of London and forever at her father’s beck and call. Then, one night, she must transport a mysterious man from a foreign ship to the banks of the Thames, a man who ends up renting a room in Essie’s house, identifying himself only as ‘Raven’. When curiosity gets the better of her, Essie follows him and unwittingly becomes involved in something far greater than she could ever have guessed. Finding herself on a ship bound for the penal colonies in Australia with Raven and his cousin Alice, this is only the start of a remarkable journey taking her to the other side of the world and back again…

Explore powerful R packages to create predictive models using ensemble methods Key Features *Implement machine learning algorithms to build ensemble-efficient models *Explore powerful R packages to create predictive models using ensemble methods *Learn to build ensemble models on large datasets using a practical approach Book Description Ensemble techniques are used for combining two or more similar or dissimilar machine learning algorithms to create a stronger model. Such a model delivers superior prediction power and can give your datasets a boost in accuracy. Hands-On Ensemble Learning with R begins with the important statistical resampling methods. You will then walk through the central trilogy of ensemble techniques – bagging, random forest, and boosting – then you'll learn how they can be used to provide greater accuracy on large datasets using popular R packages. You will learn how to combine model predictions using different machine learning algorithms to build ensemble models. In addition to this, you will explore how to improve the performance of your ensemble models. By the end of this book, you will have learned how machine learning algorithms can be combined to reduce common problems and build simple efficient ensemble models with the help of real-world examples. What you will learn *Carry out an essential review of re-sampling methods, bootstrap, and jackknife *Explore the key ensemble methods: bagging, random forests, and boosting *Use multiple algorithms to make strong predictive models *Enjoy a comprehensive treatment of boosting methods *Supplement methods with statistical tests, such as ROC *Walk through data structures in classification, regression, survival, and time series data *Use the supplied R code to implement ensemble methods *Learn stacking method to combine heterogeneous machine learning models Who this book is for This book is for you if you are a data scientist or machine learning developer who wants to implement machine learning techniques by building ensemble models with the power of R. You will learn how to combine different machine learning algorithms to perform efficient data processing. Basic knowledge of machine learning techniques and programming knowledge of R would be an added advantage.

Master serverless architectures in Python and their implementation, with Zappa on three different frameworks. Key Features * Scalable serverless Python web services using Django, Flask, and Pyramid. * Learn Asynchronous task execution on AWS Lambda and scheduling using Zappa. * Implementing Zappa in a Docker container. Book Description Serverless applications are becoming very popular these days, not just because they save developers the trouble of managing the servers, but also because they provide several other benefits such as cutting heavy costs and improving the overall performance of the application. This book will help you build serverless applications in a quick and efficient way. We begin with an introduction to AWS and the API gateway, the environment for serverless development, and Zappa. We then look at building, testing, and deploying apps in AWS with three different frameworks--Flask, Django, and Pyramid. Setting up a custom domain along with SSL certificates and configuring them with Zappa is also covered. A few advanced Zappa settings are also covered along with securing Zappa with AWS VPC. By the end of the book you will have mastered using three frameworks to build robust and cost-efficient serverless apps in Python. What you will learn *Build, test, and deploy a simple web service using AWS CLI *Integrate Flask-based Python applications, via AWS CLI configuration *Design Rest APIs integrated with Zappa for Flask and Django *Create a project in the Pyramid framework and configure it with Zappa *Generate SSL Certificates using Amazon Certificate Manager *Configure custom domains with AWS Route 53 *Create a Docker container similar to AWS Lambda Who this book is for Python Developers who are interested in learning how to develop fast and highly scalable serverless applications in Python, will find this book useful