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Node.js Design Patterns

Node.js Design Patterns PDF Author: Mario Casciaro
Publisher: Packt Publishing Ltd
ISBN: 1785887386
Category : Computers
Languages : en
Pages : 520

Book Description
Get the best out of Node.js by mastering its most powerful components and patterns to create modular and scalable applications with ease About This Book Create reusable patterns and modules by leveraging the new features of Node.js . Understand the asynchronous single thread design of node and grasp all its features and patterns to take advantage of various functions. This unique guide will help you get the most out of Node.js and its ecosystem. Who This Book Is For The book is meant for developers and software architects with a basic working knowledge of JavaScript who are interested in acquiring a deeper understanding of how to design and develop enterprise-level Node.js applications. Basic knowledge of Node.js is also helpful to get the most out of this book. What You Will Learn Design and implement a series of server-side JavaScript patterns so you understand why and when to apply them in different use case scenarios Become comfortable with writing asynchronous code by leveraging constructs such as callbacks, promises, generators and the async-await syntax Identify the most important concerns and apply unique tricks to achieve higher scalability and modularity in your Node.js application Untangle your modules by organizing and connecting them coherently Reuse well-known techniques to solve common design and coding issues Explore the latest trends in Universal JavaScript, learn how to write code that runs on both Node.js and the browser and leverage React and its ecosystem to implement universal applications In Detail Node.js is a massively popular software platform that lets you use JavaScript to easily create scalable server-side applications. It allows you to create efficient code, enabling a more sustainable way of writing software made of only one language across the full stack, along with extreme levels of reusability, pragmatism, simplicity, and collaboration. Node.js is revolutionizing the web and the way people and companies create their software. In this book, we will take you on a journey across various ideas and components, and the challenges you would commonly encounter while designing and developing software using the Node.js platform. You will also discover the "Node.js way" of dealing with design and coding decisions. The book kicks off by exploring the basics of Node.js describing it's asynchronous single-threaded architecture and the main design patterns. It then shows you how to master the asynchronous control flow patterns,and the stream component and it culminates into a detailed list of Node.js implementations of the most common design patterns as well as some specific design patterns that are exclusive to the Node.js world.Lastly, it dives into more advanced concepts such as Universal Javascript, and scalability' and it's meant to conclude the journey by giving the reader all the necessary concepts to be able to build an enterprise grade application using Node.js. Style and approach This book takes its intended readers through a comprehensive explanation to create a scalable and efficient real-time server-side apps.

Node.js Design Patterns

Node.js Design Patterns PDF Author: Mario Casciaro
Publisher: Packt Publishing Ltd
ISBN: 1785887386
Category : Computers
Languages : en
Pages : 520

Book Description
Get the best out of Node.js by mastering its most powerful components and patterns to create modular and scalable applications with ease About This Book Create reusable patterns and modules by leveraging the new features of Node.js . Understand the asynchronous single thread design of node and grasp all its features and patterns to take advantage of various functions. This unique guide will help you get the most out of Node.js and its ecosystem. Who This Book Is For The book is meant for developers and software architects with a basic working knowledge of JavaScript who are interested in acquiring a deeper understanding of how to design and develop enterprise-level Node.js applications. Basic knowledge of Node.js is also helpful to get the most out of this book. What You Will Learn Design and implement a series of server-side JavaScript patterns so you understand why and when to apply them in different use case scenarios Become comfortable with writing asynchronous code by leveraging constructs such as callbacks, promises, generators and the async-await syntax Identify the most important concerns and apply unique tricks to achieve higher scalability and modularity in your Node.js application Untangle your modules by organizing and connecting them coherently Reuse well-known techniques to solve common design and coding issues Explore the latest trends in Universal JavaScript, learn how to write code that runs on both Node.js and the browser and leverage React and its ecosystem to implement universal applications In Detail Node.js is a massively popular software platform that lets you use JavaScript to easily create scalable server-side applications. It allows you to create efficient code, enabling a more sustainable way of writing software made of only one language across the full stack, along with extreme levels of reusability, pragmatism, simplicity, and collaboration. Node.js is revolutionizing the web and the way people and companies create their software. In this book, we will take you on a journey across various ideas and components, and the challenges you would commonly encounter while designing and developing software using the Node.js platform. You will also discover the "Node.js way" of dealing with design and coding decisions. The book kicks off by exploring the basics of Node.js describing it's asynchronous single-threaded architecture and the main design patterns. It then shows you how to master the asynchronous control flow patterns,and the stream component and it culminates into a detailed list of Node.js implementations of the most common design patterns as well as some specific design patterns that are exclusive to the Node.js world.Lastly, it dives into more advanced concepts such as Universal Javascript, and scalability' and it's meant to conclude the journey by giving the reader all the necessary concepts to be able to build an enterprise grade application using Node.js. Style and approach This book takes its intended readers through a comprehensive explanation to create a scalable and efficient real-time server-side apps.

World Report 2020

World Report 2020 PDF Author: Human Rights Watch
Publisher: Seven Stories Press
ISBN: 1644210061
Category : Political Science
Languages : en
Pages : 813

Book Description
The best country-by-country assessment of human rights. The human rights records of more than ninety countries and territories are put into perspective in Human Rights Watch's signature yearly report. Reflecting extensive investigative work undertaken by Human Rights Watch staff, in close partnership with domestic human rights activists, the annual World Report is an invaluable resource for journalists, diplomats, and citizens, and is a must-read for anyone interested in the fight to protect human rights in every corner of the globe.

Developmental and Behavioral Pediatrics

Developmental and Behavioral Pediatrics PDF Author: Robert G. Voigt
Publisher:
ISBN: 9781581106862
Category : Child development
Languages : en
Pages : 590

Book Description
All-new clinical resource for managing children with developmental and behavioral concerns. Developed by leading experts in developmental and behavioral pediatrics, the all-new AAP Developmental and Behavioral Pediatrics gives one place to turn for expert recommendations to deliver, coordinate, and/or monitor quality developmental/behavioral care within the medical home. The one resource with all the essentials for pediatric primary care providers. Evaluation and care initiation: Interviewing and counseling, Surveillance and screening, Psychoeducational testing, Neurodevelopment.

The State of Food Security and Nutrition in the World 2020

The State of Food Security and Nutrition in the World 2020 PDF Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 925132901X
Category : Political Science
Languages : en
Pages : 320

Book Description
Updates for many countries have made it possible to estimate hunger in the world with greater accuracy this year. In particular, newly accessible data enabled the revision of the entire series of undernourishment estimates for China back to 2000, resulting in a substantial downward shift of the series of the number of undernourished in the world. Nevertheless, the revision confirms the trend reported in past editions: the number of people affected by hunger globally has been slowly on the rise since 2014. The report also shows that the burden of malnutrition in all its forms continues to be a challenge. There has been some progress for child stunting, low birthweight and exclusive breastfeeding, but at a pace that is still too slow. Childhood overweight is not improving and adult obesity is on the rise in all regions. The report complements the usual assessment of food security and nutrition with projections of what the world may look like in 2030, if trends of the last decade continue. Projections show that the world is not on track to achieve Zero Hunger by 2030 and, despite some progress, most indicators are also not on track to meet global nutrition targets. The food security and nutritional status of the most vulnerable population groups is likely to deteriorate further due to the health and socio economic impacts of the COVID-19 pandemic. The report puts a spotlight on diet quality as a critical link between food security and nutrition. Meeting SDG 2 targets will only be possible if people have enough food to eat and if what they are eating is nutritious and affordable. The report also introduces new analysis of the cost and affordability of healthy diets around the world, by region and in different development contexts. It presents valuations of the health and climate-change costs associated with current food consumption patterns, as well as the potential cost savings if food consumption patterns were to shift towards healthy diets that include sustainability considerations. The report then concludes with a discussion of the policies and strategies to transform food systems to ensure affordable healthy diets, as part of the required efforts to end both hunger and all forms of malnutrition.

School, Family, and Community Partnerships

School, Family, and Community Partnerships PDF Author: Joyce L. Epstein
Publisher: Corwin Press
ISBN: 1483320014
Category : Education
Languages : en
Pages : 508

Book Description
Strengthen programs of family and community engagement to promote equity and increase student success! When schools, families, and communities collaborate and share responsibility for students′ education, more students succeed in school. Based on 30 years of research and fieldwork, the fourth edition of the bestseller School, Family, and Community Partnerships: Your Handbook for Action, presents tools and guidelines to help develop more effective and more equitable programs of family and community engagement. Written by a team of well-known experts, it provides a theory and framework of six types of involvement for action; up-to-date research on school, family, and community collaboration; and new materials for professional development and on-going technical assistance. Readers also will find: Examples of best practices on the six types of involvement from preschools, and elementary, middle, and high schools Checklists, templates, and evaluations to plan goal-linked partnership programs and assess progress CD-ROM with slides and notes for two presentations: A new awareness session to orient colleagues on the major components of a research-based partnership program, and a full One-Day Team Training Workshop to prepare school teams to develop their partnership programs. As a foundational text, this handbook demonstrates a proven approach to implement and sustain inclusive, goal-linked programs of partnership. It shows how a good partnership program is an essential component of good school organization and school improvement for student success. This book will help every district and all schools strengthen and continually improve their programs of family and community engagement.

Lisbon Before the 1755 Earthquake

Lisbon Before the 1755 Earthquake PDF Author:
Publisher: Editions Chandeigne
ISBN: 9789727921416
Category : Lisbon (Portugal)
Languages : en
Pages : 134

Book Description


IAP Guidebook on Immunization 2018-2019

IAP Guidebook on Immunization 2018-2019 PDF Author: Balasubramanian S
Publisher: Jaypee Brothers Medical Publishers
ISBN: 938958700X
Category : Medical
Languages : en
Pages : 533

Book Description


America: The Eagle Has Fallen

America: The Eagle Has Fallen PDF Author: Gordon Ballantyne
Publisher: Severed Press
ISBN: 9781925840674
Category : Fiction
Languages : en
Pages : 148

Book Description
What happens when the lights go out and might never shine again?In America: The Eagle has Fallen, the United States has been attacked with an EMP device that destroys the electrical grid and renders all electronic devices unusable. America spirals into anarchy as society collapses without access to life sustaining resources, while gun barrel diplomacy becomes the only law of the land in the new Wild West. Follow James Robertson, a self-professed prepper, as he and his new extended family struggle to secure their homestead in Western Washington and rebuild a community and state in a post-apocalyptic world. Experts have suggested that 92% of the population will perish in a complete grid down scenario while James and his new allies attempt to prove them all wrong. Can the rule of law and common decency be restored faster than the hungry and despotic can tear it asunder?

SHLEP: Finding Healing on Horseback in the Lower 48

SHLEP: Finding Healing on Horseback in the Lower 48 PDF Author: Kathy Burns
Publisher:
ISBN: 9781093965186
Category :
Languages : en
Pages : 327

Book Description
When Kathy decides to leave her abusive marriage, she is 59 years old. She's unprepared to live on a reduced income when her estranged husband hides his assets from the court. She's shocked by the cost of rentals in Southern California. She didn't realize how impossible it would be to land a job at her age and after being out of the market for two decades while she raised her kids. She hasn't anticipated that her nearly grown children would be mad at her for finally standing up for herself. And she certainly hasn't expected the way that the prolonged stress of her marriage would fragment her psyche, making her long to not wake up in the morning.The only time she feels halfway sane is when she is riding her horses and so, with a truck and horse trailer paid for with money borrowed from her Dad, Kathy decides to hit the road, riding in each of the lower 48 states until she finds a new place to call home and finds a calm within herself again. She names the journey SHLEP: Soul-searching, Home seeking, Liberating, Equestrian Party.On her 13-month adventure, most of it solo, she confronts physical challenges and emotional demons. She deals with the dying of both her parents, re-bonding with her sister, and making peace with her three children. She meets so many women who are in the process of re-making their lives after their plans and dreams were shattered; these women are inspired by Kathy's journey and in turn, provide her with support and sustenance. Perhaps most importantly, she re-establishes her relationship with God and begins to rely on His grace to sustain her. In the process, she makes peace with the "mess of her life" and gains a deeper confidence than she has ever known.

Node.js Design Patterns

Node.js Design Patterns PDF Author: Mario Casciaro
Publisher: Packt Publishing Ltd
ISBN: 1839210443
Category : Computers
Languages : en
Pages : 661

Book Description
Learn proven patterns, techniques, and tricks to take full advantage of the Node.js platform. Master well-known design principles to create applications that are readable, extensible, and that can grow big. Purchase of the print or Kindle book includes a free eBook in the PDF format. Key Features Learn how to create solid server-side applications by leveraging the full power of Node.js Understand how Node.js works and learn how to take full advantage of its core components as well as the solutions offered by its ecosystem Avoid common mistakes and use proven patterns to create production grade Node.js applications Book DescriptionIn this book, we will show you how to implement a series of best practices and design patterns to help you create efficient and robust Node.js applications with ease. We kick off by exploring the basics of Node.js, analyzing its asynchronous event driven architecture and its fundamental design patterns. We then show you how to build asynchronous control flow patterns with callbacks, promises and async/await. Next, we dive into Node.js streams, unveiling their power and showing you how to use them at their full capacity. Following streams is an analysis of different creational, structural, and behavioral design patterns that take full advantage of JavaScript and Node.js. Lastly, the book dives into more advanced concepts such as Universal JavaScript, scalability and messaging patterns to help you build enterprise-grade distributed applications. Throughout the book, you’ll see Node.js in action with the help of several real-life examples leveraging technologies such as LevelDB, Redis, RabbitMQ, ZeroMQ, and many others. They will be used to demonstrate a pattern or technique, but they will also give you a great introduction to the Node.js ecosystem and its set of solutions.What you will learn Become comfortable with writing asynchronous code by leveraging callbacks, promises, and the async/await syntax Leverage Node.js streams to create data-driven asynchronous processing pipelines Implement well-known software design patterns to create production grade applications Share code between Node.js and the browser and take advantage of full-stack JavaScript Build and scale microservices and distributed systems powered by Node.js Use Node.js in conjunction with other powerful technologies such as Redis, RabbitMQ, ZeroMQ, and LevelDB Who this book is for This book is for developers and software architects who have some prior basic knowledge of JavaScript and Node.js and now want to get the most out of these technologies in terms of productivity, design quality, and scalability. Software professionals with intermediate experience in Node.js and JavaScript will also find valuable the more advanced patterns and techniques presented in this book. This book assumes that you have an intermediate understanding of web application development, databases, and software design principles.