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)
1
Section 1: Learning about Performance in Go
7
Section 2: Applying Performance Concepts in Go
13
Section 3: Deploying, Monitoring, and Iterating on Go Programs with Performance in Mind

Understanding functions

The Go runtime library also has functions that you can inject into your program's runtime to emit runtime data. Let's run through a couple of prime examples. A full list of all of the available runtime functions can be found at https://golang.org/pkg/runtime/#pkg-index. Many of the functions that are available in this package are also included in the runtime/pprof package, which we will investigate in more detail in Chapter 12, Profiling Go Code.

KeepAlive

The runtime.KeepAlive() function expects interface{} and ensures that the object passed to it isn't freed and that its finalizer (as defined by runtime.SetFinalizer) is not run. This keeps the argument passed to KeepAlive reachable...