Go Web Programming

Summary Go Web Programming teaches you how to build scalable, high-performance web applications in Go using modern design principles. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology The Go language handles the demands of scalable, high-performance web applications by providing clean and fast compiled code, garbage collection, a simple concurrency model, and a fantastic standard library. It's perfect for writing microservices or building scalable, maintainable systems. About the Book Go Web Programming teaches you how to build web applications in Go using modern design principles. You'll learn how to implement the dependency injection design pattern for writing test doubles, use concurrency in web applications, and create and consume JSON and XML in web services. Along the way, you'll discover how to minimize your dependence on external frameworks, and you'll pick up valuable productivity techniques for testing and deploying your applications. What's Inside Basics Testing and benchmarking Using concurrency Deploying to standalone servers, PaaS, and Docker Dozens of tips, tricks, and techniques About the Reader This book assumes you're familiar with Go language basics and the general concepts of web development. About the Author Sau Sheong Chang is Managing Director of Digital Technology at Singapore Power and an active contributor to the Ruby and Go communities. Table of Contents PART 1 GO AND WEB APPLICATIONS Go and web applications Go ChitChat PART 2 BASIC WEB APPLICATIONS Handling requests Processing requests Displaying content Storing data PART 3 BEING REAL Go web services Testing your application Leveraging Go concurrency Deploying Go

Take a deep dive into web development using the Go programming language to build web apps and RESTful services to create reliable and efficient software. Web Development with Go provides Go language fundamentals and then moves on to advanced web development concepts and successful deployment of Go web apps to the cloud. Web Development with Go will teach you how to develop scalable real-world web apps, RESTful services, and backend systems with Go. The book starts off by covering Go programming language fundamentals as a prerequisite for web development. After a thorough understanding of the basics, the book delves into web development using the built-in package, net/http. With each chapter you’ll be introduced to new concepts for gradually building a real-world web system. The book further shows you how to integrate Go with other technologies. For example, it provides an overview of using MongoDB as a means of persistent storage, and provides an end-to-end REST API sample as well. The book then moves on to demonstrate how to deploy web apps to the cloud using the Google Cloud platform. Web Development with Go provides: Fundamentals for building real-world web apps in Go Thorough coverage of prerequisites and practical code examples Demo web apps for attaining a deeper understanding of web development A reference REST API app which can be used to build scalable real-world backend services in Go A thorough demonstration of deploying web apps to the Cloud using the Google Cloud platform Go is a high-performance language while providing greater level of developer productivity, therefore Web Development with Go equips you with the necessary skills and knowledge required for effectively building robust and efficient web apps by leveraging the features of Go.

Build real-world, production-ready solutions by harnessing the powerful features of Go About This Book An easy-to-follow guide that provides everything a developer needs to know to build end-to-end web applications in Go Write interesting and clever, but simple code, and learn skills and techniques that are directly transferable to your own projects A practical approach to utilize application scaffolding to design highly scalable programs that are deeply rooted in go routines and channels Who This Book Is For This book is intended for developers who are new to Go, but have previous experience of building web applications and APIs. What You Will Learn Build a fully featured REST API to enable client-side single page apps Utilize TLS to build reliable and secure sites Learn to apply the nuances of the Go language to implement a wide range of start-up quality projects Create websites and data services capable of massive scale using Go's net/http package, exploring RESTful patterns as well as low-latency WebSocket APIs Interact with a variety of remote web services to consume capabilities ranging from authentication and authorization to a fully functioning thesaurus Explore the core syntaxes and language features that enable concurrency in Go Understand when and where to use concurrency to keep data consistent and applications non-blocking, responsive, and reliable Utilize advanced concurrency patterns and best practices to stay low-level without compromising the simplicity of Go itself In Detail Go is an open source programming language that makes it easy to build simple, reliable, and efficient software. It is a statically typed language with syntax loosely derived from that of C, adding garbage collection, type safety, some dynamic-typing capabilities, additional built-in types such as variable-length arrays and key-value maps, and a large standard library. This course starts with a walkthrough of the topics most critical to anyone building a new web application. Whether it's keeping your application secure, connecting to your database, enabling token-based authentication, or utilizing logic-less templates, this course has you covered. Scale, performance, and high availability lie at the heart of the projects, and the lessons learned throughout this course will arm you with everything you need to build world-class solutions. It will also take you through the history of concurrency, how Go utilizes it, how Go differs from other languages, and the features and structures of Go's concurrency core. It will make you feel comfortable designing a safe, data-consistent, and high-performance concurrent application in Go. This course is an invaluable resource to help you understand Go's powerful features to build simple, reliable, secure, and efficient web applications. Style and approach This course is a step-by-step guide, which starts off with the basics of go programming to build web applications and will gradually move on to cover intermediate and advanced topics. You will be going through this smooth transition by building interesting projects along with the authors, discussing significant options, and decisions at each stage, while keeping the programs lean, uncluttered, and as simple as possible.

86 recipes on how to build fast, scalable, and powerful web services and applications with Go Key Features Become proficient in RESTful web services Build scalable, high-performant web applications in Go Get acquainted with Go frameworks for web development Book Description Go is an open source programming language that is designed to scale and support concurrency at the language level. This gives you the liberty to write large concurrent web applications with ease. From creating web application to deploying them on Amazon Cloud Services, this book will be your one-stop guide to learn web development in Go. The Go Web Development Cookbook teaches you how to create REST services, write microservices, and deploy Go Docker containers. Whether you are new to programming or a professional developer, this book will help get you up to speed with web development in Go. We will focus on writing modular code in Go; in-depth informative examples build the base, one step at a time. You will learn how to create a server, work with static files, SQL, NoSQL databases, and Beego. You will also learn how to create and secure REST services, and create and deploy Go web application and Go Docker containers on Amazon Cloud Services. By the end of the book, you will be able to apply the skills you've gained in Go to create and explore web applications in any domain. What you will learn Create a simple HTTP and TCP web server and understand how it works Explore record in a MySQL and MongoDB database Write and consume RESTful web service in Go Invent microservices in Go using Micro – a microservice toolkit Create and Deploy the Beego application with Nginx Deploy Go web application and Docker containers on an AWS EC2 instance Who this book is for This book is for Go developers interested in learning how to use Go to build powerful web applications. A background in web development is expected.

Web Programming with Go is a must-have book for software professionals and web developers looking to harness Go's potential for creating excellent web apps. The extensive knowledge imparted by this book about Go's powerful libraries and packages is crucial for building scalable and efficient web platforms. The book's core focus is on exploring deeply into the complexities of web development through the perspective of Go. The first step in building any web application is to review the fundamentals, which will serve as a foundation for the rest of the learning experience. As you explore deeper, you'll learn about the diverse ecosystem that supports Go. This book covers a wide range of issues, including the complexities of routing mechanics, HTTP requests, and Go's concurrency model, all with the goal of improving web efficiency. The book uses the example of a "bookstore app" throughout the book, providing you with a practical touchpoint on every possible learning. With this iterative example, you can follow the development of a simple web app from its infancy all the way to a fully featured, robust platform. The later sections of the book focus on performance evaluation and debugging, which are frequently overlooked in other Go books. This book takes you from the fundamentals of web development to the depths of Go, culminating in a strong online application designed to meet today's digital issues. This book promises to be your compass in the vast ocean of web development, whether you're an experienced developer or an enthusiast just getting started with Go. Key Learnings Master Go's efficient syntax and streamline coding with better performance. Build robust web applications from scratch, ensuring scalability and responsiveness. Seamlessly integrate APIs, enhancing app functionality and user experience. Harness Go's concurrency, boosting app speed and multitasking capabilities. Optimize data storage and retrieval with Go, ensuring data integrity and speed. Develop resilient apps by mastering error detection and troubleshooting in Go. Implement user sessions, enhancing user experience and data security. Ensure app reliability through Go’s comprehensive testing and debugging techniques. Utilize Go tools for real-time performance tracking, ensuring optimal user experiences. Safeguard user data and interactions through Go's top-tier security practices. Table of Content Introduction to Web Development in Go Structuring Go Web Application Handling HTTP Requests and Routing Templating and Rendering Content Interaction with Databases Concurrency in Go Sessions, Authentication and Authorization Frontend and Backend Communication Testing and Debugging

The Go Programming Language is the authoritative resource for any programmer who wants to learn Go. It shows how to write clear and idiomatic Go to solve real-world problems. The book does not assume prior knowledge of Go nor experience with any specific language, so you’ll find it accessible whether you’re most comfortable with JavaScript, Ruby, Python, Java, or C++. The first chapter is a tutorial on the basic concepts of Go, introduced through programs for file I/O and text processing, simple graphics, and web clients and servers. Early chapters cover the structural elements of Go programs: syntax, control flow, data types, and the organization of a program into packages, files, and functions. The examples illustrate many packages from the standard library and show how to create new ones of your own. Later chapters explain the package mechanism in more detail, and how to build, test, and maintain projects using the go tool. The chapters on methods and interfaces introduce Go’s unconventional approach to object-oriented programming, in which methods can be declared on any type and interfaces are implicitly satisfied. They explain the key principles of encapsulation, composition, and substitutability using realistic examples. Two chapters on concurrency present in-depth approaches to this increasingly important topic. The first, which covers the basic mechanisms of goroutines and channels, illustrates the style known as communicating sequential processes for which Go is renowned. The second covers more traditional aspects of concurrency with shared variables. These chapters provide a solid foundation for programmers encountering concurrency for the first time. The final two chapters explore lower-level features of Go. One covers the art of metaprogramming using reflection. The other shows how to use the unsafe package to step outside the type system for special situations, and how to use the cgo tool to create Go bindings for C libraries. The book features hundreds of interesting and practical examples of well-written Go code that cover the whole language, its most important packages, and a wide range of applications. Each chapter has exercises to test your understanding and explore extensions and alternatives. Source code is freely available for download from http://gopl.io/ and may be conveniently fetched, built, and installed using the go get command.

Build fast, scalable web server applications by harnessing the power of solution-driven programming with Go. KEY FEATURES ● Understanding the core concepts of the Go programming language. ● Designing and development of modern Web Server applications. ● Dealing with different kinds of database management solutions. ● Deploying applications with cutting edge technologies. ● Monitoring and maintenance of applications with popular tools. DESCRIPTION In this book, we are going to learn how to design, develop and deploy Web Server Applications using the Go programming language. In recent years, Go has become the industrial standard for these kinds of applications; so by learning this, a lot of good opportunities can be opened in the market. All subjects will be covered through various practical examples. This book will cover the state-of-the-art technology for the development of Web Applications and follow all industrial standards. At the beginning we will do the preparation for development. Here, we will learn the basics of the Go programming language, the basics of Web Servers, how to set up a project with Go, and how to design software solutions. Later, we will concentrate more on development. We will learn how to develop the application designed in the previous chapters, how to use different types of databases, how to test our application, and how to make it secure. At the end of the book, we will show how to deploy the application and monitor it after deployment. After reading this book, the readers can independently develop Web Server Applications or include themselves in already-started projects. WHAT WILL YOU LEARN ● Solve common problems with the Go programming language. ● Be familiar with the terms related to server applications. ● Understand the phases in the software development process. ● Be able to independently design software solutions and use some best practices. ● Be familiar with multiple different database management solutions (relational and NoSQL) and be able to predict which best suits their needs. ● Learn how to deploy applications. ● Understand and know how to apply monitoring and alerting concepts. WHO THIS BOOK IS FOR The book is for beginners and experienced developers who want to learn and have a thorough introduction to web development using the Go programming language. With a lot of practical examples and guidelines on how to install and configure specific tools, beginners will easily understand and follow the content covered in this book. On the other hand, more experienced developers will certainly find some useful tips and tricks. TABLE OF CONTENTS 1. Basic Concepts of Go programming language 2. Advanced Concepts of Go programming language 3. Web Servers 4. Setting up a project with Go programming language 5. Design of Web Applications 6. Application layers 7. Relational databases and Repository layer 8. NoSQL databases and Repository layer 9. Testing 10. Security 11. Deploying Web Application 12. Monitoring and Alerting

Learn Golang Programming by "Reading" This Book! Go is one of the most popular programming languages, created by Google. Go is much simpler than most other modern programming languages such as Java or C#. It is easier to learn. It is easier to use. And, it is more fun to use. If you are just starting with programming, then Go is the perfect language to learn programming with. Go is a "backend programming language", and it is different from other popular dynamic languages like Python and Javascript. It requires more discipline. It will make you a better programmer. Once you are comfortable with Go, you can more easily learn other programming languages. The Art of Go - Basics starts from the absolute basics and moves on to more advanced topics. Although it is an introductory book, you will gain sufficient knowledge, after reading this book, that you can venture into a journey of programming in Go on your own. If you are a seasoned developer, then it will provide a good introduction to idiomatic usages of Go in broad contexts. Who is this book for? Anyone who wants to know what programming is and how the code is written. Anyone who has tried to learn programming and given up because it was too hard. Anyone who has some experience in programming and who wants to learn the Go language. The Art of Go - Basics is organized into a series of small lessons. Each lesson starts with simple example programs, and it emphasizes code reading rather than premature writing. You will learn basics of coding, and some intricacies of Golang, just by reading each lesson. The book includes some (optional) exercises, and it ends with a few final projects. The Art of Go - Basics covers the following topics (as of version Go 1.16), among other things: The basic structure of Go programs. Basic constructs of the Go programming language such as expressions and statements. Primitive types, slices, maps, and functions. Go structs, interfaces, and methods. Pointers. Value semantics vs reference semantics. Value receivers vs pointer receivers. Concurrent programming with Goroutines and channels. Simple network programming over TCP. Simple Web programming using the net/http standard package. Go build tools. Go modules. If you are just starting to learn programming, then learn Go. Learn programming with Go. The Art of Go - Basics will guide you through your first steps in the wonderful world of programming! Get this book now and start learning programming in Go today!

The Go Programming Cookbook ensures Go programmers may confidently and effectively navigate the complex software development landscape. Both newcomers to the world of Go programming and seasoned professionals looking to sharpen their skills will find something of interest in this carefully written book. This cookbook covers a wide range of topics, from the basics of Go syntax and core ideas to more advanced subjects like concurrency, networking, and microservices design. Building a Go development environment, learning the fundamentals of Go constructs, and mastering the art of Go Module dependency management are all covered in the first few chapters, which prepare readers for what's to come. To guarantee that readers can construct strong and maintainable programs, the next sections cover error handling, unit testing, and database interfaces. The book really comes into its own when it comes to its in-depth examination of network programming; it covers topics like building HTTP clients, implementing FTP and SSH clients, and using WebSockets for real-time communication. To prepare developers to create safe, networked applications in a world where everything is always connected, it teaches them how to establish secure TLS/SSL communications, which is a fundamental component of security. In addition to providing practical solutions, the recipes educate readers on the concurrency model and design principles of Go, which helps them build an intuitive understanding of high-performance software development. Key Learnings Get a solid grounding in programming by learning the syntax and concepts of Go. Explore concurrency with Goroutines and Channels to maximize Go's possibilities. Effortlessly handle intricate network programming jobs involving WebSockets and HTTP clients. Learn TLS/SSL inside and out to make your applications secure for transmitted sensitive information. Effectively manage data by integrating with SQL and NoSQL databases. Use Go Modules to have easier dependency management and build reproducibility. Make your Go code clean and easy to maintain by following design patterns and other best practices. Get the most out of your system by learning about memory management, benchmarking, and profiling. Create web servers and microservices from the ground up that are scalable and perform exceptionally well. Become an expert Go problem solver by learning practical answers to real-world issues. Table of Content Setting up and Exploring Go Advanced Go Features and Techniques File Handling and Data Processing in Go Building and Managing Go APIs Implementing RPC and gRPC Services in Go Web Services and Automation using Go Building Microservices Architecture using Go Strengthening Database Interactions Enhancing Performance and Best Practices in Go Networking and Protocol Handling