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 benchmarking

Metrics and measurement are at the root of optimization. The adage You can't improve what you can't measure rings true with performance. To be able to make intelligent decisions about performance optimizations, we must continuously measure the performance of the functions we are trying to optimize.

As we mentioned in Chapter 1, Introduction to Performance in Go, the Go creators made performance a forethought in their language design. The Go testing package ( is used to test Go code in a systematic way. The testing package is a fundamental part of the Go language. This package also includes a helpful built-in benchmarking functionality. This functionality, which is invoked by go test -bench, runs the benchmarks that you've defined for your functions. The results from your tests can also be saved and viewed...