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

Exploring goroutines

Go is a language designed with concurrency in mind. Concurrency is the ability to execute independent processes. Goroutines are a construct in Go that can help with concurrency. They are often referred to as lightweight threads—for good reason. In other languages, threads are handled by the OS. This, in turn, uses a larger-sized call stack and usually handles less concurrency with a given memory stack size. Goroutines are functions or methods that run within the Go runtime concurrently and don't connect to the underlying OS. The scheduler within the Go language manages goroutines' life cycles. The system's scheduler has a lot of overhead as well, so limiting the number of threads being utilized can help to improve performance.

The Go scheduler...