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

Go run – executing your packages

go run runs and compiles a named Go program. The invocation stanza for go run is go run [build flags] [-exec xprog] package [arguments...].

Go run allows a developer to quickly compile and run a go binary in one operation. During this process, go run builds the executable file, runs it, and then deletes the executable file. This is particularly helpful in a development environment. As you rapidly iterate on your Go program, go run can be used as a shortcut to validate that the code you are changing will result in a build artifact that you deem acceptable for use. As we learned earlier in this chapter, the build flags for many of these tools are consistent.

goRun.go is one of the simplest possible go programs. It has no arguments, just an empty main() function invocation. We are using this as an example to show this process with no additional...