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

Understanding formatting in Go

As mentioned in Chapter 1, Introduction to Performance in Go, gofmt is an opinionated formatter for Go code. It indents and aligns your code the way the language maintainers intended for it to be read. Many of the most popular code editors today can execute gofmt when a file is saved. Doing this, as well as having your continuous integration software verification, saves you having to focus on the formatting of the code that you're writing since the language will be prescriptive in output. Using this tool will make Go code easier to read, write, and maintain with multiple contributors. It also removes quite a bit of controversy within the language, since spaces, tabs, and braces are positioned automatically.

We can also add a pre-commit hook to our Git repository (in .git/hooks/pre-commit) in order to corroborate the fact that all of the code...