Book Image

Hands-On High Performance with Go

By : Bob Strecansky
Book Image

Hands-On High Performance with Go

By: Bob Strecansky

Overview of this book

Go is an easy-to-write language that is popular among developers thanks to its features such as concurrency, portability, and ability to reduce complexity. This Golang book will teach you how to construct idiomatic Go code that is reusable and highly performant. Starting with an introduction to performance concepts, you’ll understand the ideology behind Go’s performance. You’ll then learn how to effectively implement Go data structures and algorithms along with exploring data manipulation and organization to write programs for scalable software. This book covers channels and goroutines for parallelism and concurrency to write high-performance code for distributed systems. As you advance, you’ll learn how to manage memory effectively. You’ll explore the compute unified device architecture (CUDA) application programming interface (API), use containers to build Go code, and work with the Go build cache for quicker compilation. You’ll also get to grips with profiling and tracing Go code for detecting bottlenecks in your system. Finally, you’ll evaluate clusters and job queues for performance optimization and monitor the application for performance regression. By the end of this Go programming book, you’ll be able to improve existing code and fulfill customer requirements by writing efficient programs.
Table of Contents (20 chapters)
Section 1: Learning about Performance in Go
Section 2: Applying Performance Concepts in Go
Section 3: Deploying, Monitoring, and Iterating on Go Programs with Performance in Mind

Introducing Cobra and Viper for configuration programming

Two commonly used Go libraries, spf13/cobra and spf13/viper, are used for configuration programming. Together, these two libraries can be used to create CLI binaries that have many configurable options. Cobra allows you to generate applications and command files, while Viper helps to read and maintain complete configuration solutions for 12-factor Go applications. Cobra and Viper are used in some of the most commonly used Go projects, including Kubernetes and Docker.

To use these two libraries together to make a cmd library, we need to make sure we nest our project directory, as follows:

Once we have created our nested directory structure, we can start setting up our main program. In our main.go file, we have defined our date command—the main.go function for Cobra and Viper us deliberately simple so that we can...