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

Profiling Go code

Profiling is a process of dynamic program analysis that measures various values related to program execution in order to give you a better understanding of the behavior of your program. In this section, you are going to learn how to profile Go code in order to understand your code better and improve its performance. Sometimes, code profiling can even reveal bugs!

First, we are going to use the command-line interface of the Go profiler. Then, we will use the web interface of the Go profiler.

The single most important thing to remember is that if you want to profile Go code, you will need to import the runtime/pprof standard Go package, either directly or indirectly. You can find the help page of the pprof tool by executing the go tool pprof -help command, which will generate lots of output.