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

The link toolchain

Go has a bunch of handy tools in its link tool that allow us to pass pertinent data to an executable function. With this tool, the programmer has the ability to set a value for a string with a particular name and value pair. Using the cmd/link package in Go allows you to pass in information to the Go program at hand at link time. The way to pass this information from the toolchain to the executable is to utilize the build parameter:

go build -ldflags '-X'

For example, if we were trying to take in a serial number for our program from the command line, we could do something like the following:

package main

import (

var SerialNumber = "unlicensed"

func main() {
if SerialNumber == "ABC123" {
fmt.Println("Valid Serial Number!")
} else {
fmt.Println("Invalid Serial Number&quot...