Learn to build a full-fledged application in Spring and Kotlin taking a reactive, microservice-based approach for scalability and robustness in the cloud About This Book ? Build a full-fledged application in Spring and Kotlin ? Architect your application to take a microservice-based approach in the cloud ? Integrate your application with a variety of Spring components Who This Book Is For Developers comfortable using Spring who have basic knowledge of Kotlin and want to take their development skills to the next level and build enterprise-grade applications will benefit from this book. What You Will Learn ? Explore Spring 5 concepts with Kotlin ? Learn both dependency injections and complex configurations ? Utilize Spring Data, Spring Cloud, and Spring Security in your applications ? Create efficient reactive systems with Project Reactor ? Write unit tests for your Spring/Kotlin applications ? Deploy applications on cloud platforms like AWS In Detail Kotlin is being used widely by developers because of its light weight, built-in null safety, and functional and reactive programming aspects. Kotlin shares the same pragmatic, innovative and opinionated mindset as Spring, so they work well together. Spring when combined with Kotlin helps you to reach a new level of productivity. This combination has helped developers to create Functional Applications using both the tools together. This book will teach you how to take advantage of these developments and build robust, scalable and reactive applications with ease. In this book, you will begin with an introduction to Spring and its setup with Kotlin. You will then dive into assessing the design considerations of your application. Then you will learn to use Spring (with Spring Boot) along with Kotlin to build a robust backend in a microservice architecture with a REST based collaboration, and leverage Project Reactor in your application. You’ll then learn how to integrate Spring Data and Spring Cloud to manage configurations for database interaction and cloud deployment. You’ll also learn to use Spring Security to beef up security of your application before testing it with the JUnit framework and then deploying it on a cloud platform like AWS. Style and approach Everything you learn will be demonstrated on real-world Spring project. In each chapter we will cover some of Spring features and apply it on our project. We will guide you from the project initialization till the project deployment.

Discover how to use the next-generation language Red for full-stack development, from systems coding over user-interfaces to blockchain programming About This Book ? Explore the latest features of Red to build scalable, fast, and secure applications ? Learn graphical programming and build highly sophisticated reactive applications ? Get familiar with the specific concepts and techniques of Red development, like working with series, viewing code as data, and using dialects. Who This Book Is For This book is for software developers and architects who want to learn Red because of its conciseness, flexibility, and expressiveness, and more specifically for its possibilities in GUI apps and blockchain / smart contracts programming. Some knowledge of the basic concepts and experience of any programming language is assumed. What You Will Learn ? Set up your Red environment to achieve the highest productivity ? Get grounded in Red, gaining experience and insight through many examples and exercises ? Build simple, compact, and portable applications ? Analyze streams of data through Parse ? Compose GUI applications with View and Draw ? Get prepared for smart contract blockchain programming in Red In Detail A key problem of software development today is software bloat, where huge toolchains and development environments are needed in software coding and deployment. Red significantly reduces this bloat by offering a minimalist but complete toolchain. This is the first introductory book about it, and it will get you up and running with Red as quickly as possible. This book shows you how to write effective functions, reduce code redundancies, and improve code reuse. It will be helpful for new programmers who are starting out with Red to explore its wide and ever-growing package ecosystem and also for experienced developers who want to add Red to their skill set. The book presents the fundamentals of programming in Red and in-depth informative examples using a step-by-step approach. You will be taken through concepts and examples such as doing simple metaprogramming, functions, collections, GUI applications, and more. By the end of the book, you will be fully equipped to start your own projects in Red. Style and approach This book will gently guide you step by step into the fascinating programming universe of the Red language, offering real-world examples and practical exercises to sharpen your insight.

Explore the features included in the latest versions of MQTT for IoT and M2M communications and use them with modern Python 3. About This Book ? Make your connected devices less prone to attackers by understanding security mechanisms ? Take advantage of MQTT features for IoT and Machine-to-Machine communications ? The only book that covers MQTT with a single language, Python Who This Book Is For This book is for developers who want to learn about the MQTT protocol for their IoT projects. Prior knowledge of working with IoT and Python will be helpful. What You Will Learn ? Learn how MQTT and its lightweight messaging system work ? Understand the MQTT puzzle: clients, servers (formerly known as brokers), and connections ? Explore the features included in the latest versions of MQTT for IoT and M2M communications ? Publish and receive MQTT messages with Python ? Learn the difference between blocking and threaded network loops ? Take advantage of the last will and testament feature ? Work with cloud-based MQTT interfaces in Python In Detail MQTT is a lightweight messaging protocol for small sensors and mobile devices. This book explores the features of the latest versions of MQTT for IoT and M2M communications, how to use them with Python 3, and allow you to interact with sensors and actuators using Python. The book begins with the specific vocabulary of MQTT and its working modes, followed by installing a Mosquitto MQTT broker. You will use different utilities and diagrams to understand the most important concepts related to MQTT. You will learn to?make all the necessary configuration to work with digital certificates for encrypting all data sent between the MQTT clients and the server. You will also work with the different Quality of Service levels and later analyze and compare their overheads. You will write Python 3.x code to control a vehicle with MQTT messages delivered through encrypted connections (TLS 1.2), and learn how leverage your knowledge of the MQTT protocol to build a solution based on requirements. Towards the end, you will write Python code to use the PubNub cloud-based real-time MQTT provider to monitor a surfing competition. In the end, you will have a solution that was built from scratch by analyzing the requirements and then write Python code that will run on water-proof IoT boards connected to multiple sensors in surfboards. Style and approach This book shows you what MQTT is, and how to install and secure an MQTT server. You will write Python 3 code to control a vehicle with MQTT messages, test and improve, then monitor a surfing competition with cloud-based real-time MQTT providers.

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

Plan, track, and release great software Key Features * Learn to create reports and dashboard for effective project management * Implement your development strategy in JIRA. * Practices to help you manage the issues in the development team Book Description As teams scale in size, project management can get very complicated. One of the best tools to deal with this kind of problem is JIRA. This book will start by organizing your project requirements and the principles of Agile development to get you started. You will then be introduced to set up a JIRA account and the JIRA ecosystem to help you implement a dashboard for your team's work and issues. You will learn how to manage any issues and bugs that might emerge in the development stage. Going ahead, the book will help you build reports and use them to plan the releases based on the study of the reports. Towards the end, you will come across working with the gathered data and create a dashboard that helps you track the project's development. What you will learn * Create your first project (and manage existing projects) in JIRA * Manage your board view and backlogs in JIRA * Run a Scrum Sprint project in JIRA * Create reports (including topic-based reports) * Forecast using versions * Search for issues with JIRA Query Language (JQL) * Execute bulk changes to issues * Create custom filters, dashboards, and widgets * Create epics, stories, bugs, and tasks Who this book is for This book is for administrators who wants to apply the Agile approach to managing the issues, bugs, and releases in their software development projects using JIRA.

Use an open source firewall and features such as failover, load balancer, OpenVPN, IPSec, and Squid to protect your network Key Features *Explore pfSense, a trusted open source network security solution *Configure pfSense as a firewall and create and manage firewall rules *Test pfSense for failover and load balancing across multiple WAN connections Book Description While connected to the internet, you’re a potential target for an array of cyber threats, such as hackers, keyloggers, and Trojans that attack through unpatched security holes. A firewall works as a barrier (or ‘shield’) between your computer and cyberspace. pfSense is highly versatile firewall software. With thousands of enterprises using pfSense, it is fast becoming the world's most trusted open source network security solution. Network Security with pfSense begins with an introduction to pfSense, where you will gain an understanding of what pfSense is, its key features, and advantages. Next, you will learn how to configure pfSense as a firewall and create and manage firewall rules. As you make your way through the chapters, you will test pfSense for failover and load balancing across multiple wide area network (WAN) connections. You will then configure pfSense with OpenVPN for secure remote connectivity and implement IPsec VPN tunnels with pfSense. In the concluding chapters, you’ll understand how to configure and integrate pfSense as a Squid proxy server. By the end of this book, you will be able to leverage the power of pfSense to build a secure network. What you will learn *Understand what pfSense is, its key features, and advantages *Configure pfSense as a firewall *Set up pfSense for failover and load balancing *Connect clients through an OpenVPN client *Configure an IPsec VPN tunnel with pfSense *Integrate the Squid proxy into pfSense Who this book is for Network Security with pfSense is for IT administrators, security administrators, technical architects, chief experience officers, and individuals who own a home or small office network and want to secure it.

Architect and design data-intensive applications and, in the process, learn how to collect, process, store, govern, and expose data for a variety of use cases Key Features *Integrate the data-intensive approach into your application architecture *Create a robust application layout with effective messaging and data querying architecture *Enable smooth data flow and make the data of your application intensive and fast Book Description Are you an architect or a developer who looks at your own applications gingerly while browsing through Facebook and applauding it silently for its data-intensive, yet ?uent and efficient, behaviour? This book is your gateway to build smart data-intensive systems by incorporating the core data-intensive architectural principles, patterns, and techniques directly into your application architecture. This book starts by taking you through the primary design challenges involved with architecting data-intensive applications. You will learn how to implement data curation and data dissemination, depending on the volume of your data. You will then implement your application architecture one step at a time. You will get to grips with implementing the correct message delivery protocols and creating a data layer that doesn’t fail when running high traffic. This book will show you how you can divide your application into layers, each of which adheres to the single responsibility principle. By the end of this book, you will learn to streamline your thoughts and make the right choice in terms of technologies and architectural principles based on the problem at hand. What you will learn *Understand how to envision a data-intensive system *Identify and compare the non-functional requirements of a data collection component *Understand patterns involving data processing, as well as technologies that help to speed up the development of data processing systems *Understand how to implement Data Governance policies at design time using various Open Source Tools *Recognize the anti-patterns to avoid while designing a data store for applications *Understand the different data dissemination technologies available to query the data in an efficient manner *Implement a simple data governance policy that can be extended using Apache Falcon Who this book is for This book is for developers and data architects who have to code, test, deploy, and/or maintain large-scale, high data volume applications. It is also useful for system architects who need to understand various non-functional aspects revolving around Data Intensive Systems.

Implement intelligent agents using PyTorch to solve classic AI problems, play console games like Atari, and perform tasks such as autonomous driving using the CARLA driving simulator Key Features *Explore the OpenAI Gym toolkit and interface to use over 700 learning tasks *Implement agents to solve simple to complex AI problems *Study learning environments and discover how to create your own Book Description Many real-world problems can be broken down into tasks that require a series of decisions to be made or actions to be taken. The ability to solve such tasks without a machine being programmed requires a machine to be artificially intelligent and capable of learning to adapt. This book is an easy-to-follow guide to implementing learning algorithms for machine software agents in order to solve discrete or continuous sequential decision making and control tasks. Hands-On Intelligent Agents with OpenAI Gym takes you through the process of building intelligent agent algorithms using deep reinforcement learning starting from the implementation of the building blocks for configuring, training, logging, visualizing, testing, and monitoring the agent. You will walk through the process of building intelligent agents from scratch to perform a variety of tasks. In the closing chapters, the book provides an overview of the latest learning environments and learning algorithms, along with pointers to more resources that will help you take your deep reinforcement learning skills to the next level. What you will learn *Explore intelligent agents and learning environments *Understand the basics of RL and deep RL *Get started with OpenAI Gym and PyTorch for deep reinforcement learning *Discover deep Q learning agents to solve discrete optimal control tasks *Create custom learning environments for real-world problems *Apply a deep actor-critic agent to drive a car autonomously in CARLA *Use the latest learning environments and algorithms to upgrade your intelligent agent development skills Who this book is for If you’re a student, game/machine learning developer, or AI enthusiast looking to get started with building intelligent agents and algorithms to solve a variety of problems with the OpenAI Gym interface, this book is for you. You will also find this book useful if you want to learn how to build deep reinforcement learning-based agents to solve problems in your domain of interest. Though the book covers all the basic concepts that you need to know, some working knowledge of Python programming language will help you get the most out of it.

Build, design, and style beautiful and informative applications on the Salesforce Lightning platform Key Features *Build and Test Lightning Components that enhance application usability and adaptability *Apply Security Best Practices to your Custom Lightning Components *Design Lightning Components for Salesforce UIs such as Lightning Pages, Salesforce 1 Application, Communities, and more. Book Description Built on the Salesforce App Cloud, the new Salesforce Lightning Experience combines three major components: Lightning Design System, Lightning App Builder, and Lightning Components, to provide an enhanced user experience. This book will enable you to quickly create modern, enterprise apps with Lightning Component Framework. You will start by building simple Lightning Components and understanding the Lightning Components architecture. The chapters cover the basics of Lightning Component Framework semantics and syntax, the security features provided by Locker Service, and use of third-party libraries inside Lightning Components. The later chapters focus on debugging, performance tuning, testing using Lightning Testing Services, and how to publish Lightning Components on Salesforce AppExchange. What you will learn *Understand Lightning Components architecture *Learn Locker security best practices *Debug and Improve performance of your Lightning Components *Use third-party libraries along with Lightning Component Framework *Learn how to publish Lightning Components on AppExchange *Use Lightning Out to take your Lightning Components outside the Salesforce platform Who this book is for This book is for Salesforce developers or developers from other platforms who are familiar with HTML, CSS, and JavaScript and want to build and test Salesforce Lightning components. No knowledge of Salesforce Lightning is required.

She’s the most unconventional woman he’ll ever meet… …and the cure for a perennial bachelor? Raised by her healer grandfather, former army medic Ally Mowak knows her alternative approach to traditional medicine puts her at odds with most of her Alaskan town. That includes Tag James, the rugged transport pilot with the sprawling family and political ambitions. Ally couldn’t be more wrong for the aspiring senator. Then why does everything feel so right when they’re together?

He has home advantage… But she's got a strong defensive play. Hockey star Troy Green never gives up. Not on the ice. Not when he battled cancer last year. And not when it comes to his new neighbor, Michelle Robinson. Troy only wants to help the struggling single mom and her sweet kids, but soon he’s falling for her. Is Troy finally ready to trade in his bachelor life and become a family man?

When a doctor and a filmmaker reconnect… Just who is healing whom? Two years ago, Dr. Wyatt Reid shared an unforgettable goodbye kiss with Mia Fiore. Now a scuba diving accident brings the daredevil documentary filmmaker into his San Francisco ER. Could this be their shot at a real relationship? But Wyatt, haunted by family tragedy, saves lives, and Mia risks hers every day. Can they find the way to a future on both their terms?

"What is French for falling in love? When Del leaves small town America to compete in a perfume competition in Paris, she thinks it is just the next step on her five-year-plan. It’s an exciting opportunity. What started out as just a dream for Del and her twin sister is nearly in her grasp. If she wins this competition, they are on their way to opening their very own perfume boutique! Arriving in Paris, watching the sun glinting off the Seine and wandering the Champs-Elysees, Del discovers the most perfect perfumery she’s ever seen. Yet, as the competition dawns Del realises that whilst she might have had the best nose in her small village, her competitors seem to know more than she could ever have dreamed. This competition isn’t going to be easy… Del has the romance of Paris to sweep her away from her worries, but as the competition heats up, so does her desire for that which she cannot have! If only the dashing owner Sébastien didn’t smell so seductive, look so handsome and make her heart flutter like it never has before. They say love smells as sweet as a red rose in bloom, but Del would tell anyone that true love can’t be bottled – it’s beautiful and unique to everyone…even herself. With everything on the line for her future, can Del really let a little attraction get in the way of securing her dreams? Praise for The Little Perfume Shop Off the Champs-Elysees: ‘I absolutely loved everything to do with this book’ Rachel Gilbey ‘Absolutely fantastic book, had me hooked from the first page. Full of anticipation, a real page turner. Loved it!’ Nerys Minney ‘In short, this is a fabulous book. In reading I was transported somewhere almost magical’ Sandra W ‘The Little Perfume Shop off the Champs-Elysees, was worth waiting for. It's got magic, sparkle, twinkling lights of Paris and above all, a copious amount of LOVE!’ "

"Fans of Jill Mansell and Carole Matthews will love this gorgeous new book from the author of the bestselling Cornish Café series. Jess has lived at the idyllic flower farm on the Isles of Scilly her whole life, but when her boyfriend Adam leaves without explanation, Jess discovers that even her little slice of Cornish heaven can be lonely. For the first time in Will’s life, he’s met someone he can’t stop thinking about. But nothing is simple when the woman of your dreams is working for you. Gaby is running away from painful memories, and where could be more perfect than a remote island off the Cornish coast? But to put the past behind her, she must keep moving … however much she might want to stay. Nothing is simple, even on paradise. Will love bloom for the residents of the little Cornish Isles? Authors love Phillipa Ashley’s books: ‘Warm and funny and feel-good. The best sort of holiday read.’ Katie Fforde ‘Filled with warm and likeable characters. Great fun!’ Jill Mansell ‘A glorious, tantalising taste of Cornwall, I could almost taste the salt of the sea air as I read it.’ Jules Wake ‘The perfect read for wherever you take your holiday but chances are if you read this first you’ll want to be heading to Cornwall!’ Bella Osborne ‘An utterly glorious, escapist read from a one of the freshest voices to emerge in women's fiction today. I loved every gorgeous page.’ Claudia Carroll "

A house fire. A suspicious death. A serial killer to catch. When a body is found in a house fire DS Peter Gayle is called to the scene. It looks like an accidental death, but the evidence just doesn’t add up. With only one murder victim they can’t make any calls, but it looks like a serial killer is operating in Exeter and it’s up to Pete to track him down. But with his wife still desperate for news on their missing son and his boss watching his every move, the pressure is on for Pete to bring the murderer to justice before it is too late. NOWHERE TO RUN is out now, but if you’re looking for more from DS Peter Gayle, then don’t miss this gripping new case.

Eggy Heads & Diggers (Bing)

Michael Bond was born in Newbury, Berkshire on 13 January 1926 and educated at Presentation College, Reading. He served in the Royal Air Force and the British Army before working as a cameraman for BBC TV for 19 years. In 2015, Michael was awarded a CBE for his services to children’s literature, to add to the OBE he received in 1997. Michael died in 2017, leaving behind one of the great literary legacies of our time.

Winner of the Nobel Prize for Literature 2007, Doris Lessing grew up in Africa – and returns to that troubled, misunderstood continent in this searing collection of short stories. ‘I believe that the chief gift from Africa to writers, white and black, is the continent itself, its presence which for some people is like an old fever, latent always in their blood; or like an old wound throbbing in the bones as the air changes. … Africa gives you the knowledge that man is a small creature, among other creatures, in a large landscape.’ Written with all the angry compassion of first-hand knowledge, these stores reveal Africa in the raw – an Africa unknown to the vast majority of Europeans. Here is a vivid, unforgettable evocation of its sounds and smells, its stark power and savage grandeur, its agony and ultimate tragedy.

Here for the first time is the full horror and madness of sharing a house, told by someone who’s been there. Birmingham pulls no punches: from dead rats in the kitchen to tent-dwelling lodgers in the living room, you’ll run for the safety of living alone. ‘A rat died in the living room at King Street and we didn’t know. There was at least six inches of compacted rubbish between our feet and the floor. Old Ratty must have crawled in there and died of pleasure. A visitor uncovered him while groping around for a beer.’ Tales of debauchery, drugs, flatmates from hell and nasty things lurking in the kitchen sink abound in Rolling Stone journalist John Birmingham’s hilarious account of sharing houses in Melbourne and Brisbane. He Died with a Felafel in His Hand makes Withnail & I look like a lesson in clean living.

‘IT’S THE NIGHTS that are the worst. I don’t know where he is, but my imagination tells me he is close at hand. In daylight I can keep the fears down; at night I am alone with the terror that he has created. If he rings me every ten minutes I think I will go mad with it; if he does not ring I worry that he is outside, watching me.’

The question seems unnecessary. After all, argument is a universal human activity in which we all engage as regularly and naturally as breathing. Even if we have never given much thought to the theory behind it, we have enough practical experience to recognize an argument the moment we become embroiled in one or hear others engaged in verbal conflict.