Book Image

Mastering Go. - Second Edition

By : Mihalis Tsoukalos
Book Image

Mastering Go. - Second Edition

By: Mihalis Tsoukalos

Overview of this book

Often referred to (incorrectly) as Golang, Go is the high-performance systems language of the future. Mastering Go, Second Edition helps you become a productive expert Go programmer, building and improving on the groundbreaking first edition. Mastering Go, Second Edition shows how to put Go to work on real production systems. For programmers who already know the Go language basics, this book provides examples, patterns, and clear explanations to help you deeply understand Go’s capabilities and apply them in your programming work. The book covers the nuances of Go, with in-depth guides on types and structures, packages, concurrency, network programming, compiler design, optimization, and more. Each chapter ends with exercises and resources to fully embed your new knowledge. This second edition includes a completely new chapter on machine learning in Go, guiding you from the foundation statistics techniques through simple regression and clustering to classification, neural networks, and anomaly detection. Other chapters are expanded to cover using Go with Docker and Kubernetes, Git, WebAssembly, JSON, and more. If you take the Go programming language seriously, the second edition of this book is an essential guide on expert techniques.
Table of Contents (20 chapters)
Title Page

Shared memory and shared variables

Shared memory and shared variables are the most common ways for UNIX threads to communicate with each other.

A mutex variable, which is an abbreviation of mutual exclusion variable, is mainly used for thread synchronization and for protecting shared data when multiple writes can occur at the same time. A mutex works like a buffered channel with a capacity of one, which allows at most one goroutine to access a shared variable at any given time. This means that there is no way for two or more goroutines to try to update that variable simultaneously.

A critical section of a concurrent program is the code that cannot be executed simultaneously by all processes, threads, or, in this case, goroutines. It is the code that needs to be protected by mutexes. Therefore, identifying the critical sections of your code will make the whole programming process...