Book Image

Mastering Go - Second Edition

By : Mihalis Tsoukalos
Book Image

Mastering Go - Second Edition

By: Mihalis Tsoukalos

Overview of this book

Often referred to (incorrectly) as Golang, Go is the high-performance systems language of the future. Mastering Go, Second Edition helps you become a productive expert Go programmer, building and improving on the groundbreaking first edition. Mastering Go, Second Edition shows how to put Go to work on real production systems. For programmers who already know the Go language basics, this book provides examples, patterns, and clear explanations to help you deeply understand Go’s capabilities and apply them in your programming work. The book covers the nuances of Go, with in-depth guides on types and structures, packages, concurrency, network programming, compiler design, optimization, and more. Each chapter ends with exercises and resources to fully embed your new knowledge. This second edition includes a completely new chapter on machine learning in Go, guiding you from the foundation statistics techniques through simple regression and clustering to classification, neural networks, and anomaly detection. Other chapters are expanded to cover using Go with Docker and Kubernetes, Git, WebAssembly, JSON, and more. If you take the Go programming language seriously, the second edition of this book is an essential guide on expert techniques.
Table of Contents (20 chapters)
Title Page

Creating a Docker image for a Go TCP/IP server

In this section, you will learn how to put kvTCP.go into a Docker image and use it from there, which is a pretty convenient way of using a TCP/IP application because a Docker image can be easily transferred to other machines or deployed in Kubernetes.

As you might expect, everything will begin with a Dockerfile, which will have the following contents:

FROM golang:latest 
RUN mkdir /files 
COPY kvTCP.go /files 
WORKDIR /files 
RUN go build -o /files/kvTCP kvTCP.go 
ENTRYPOINT ["/files/kvTCP","80"] 

After that, you will need to build the Docker image, as follows:

$ docker build -t kvtcp:latest .
Sending build context to Docker daemon  6.656kB
Step 1/6 : FROM golang:latest
 ---> 7ced090ee82e
Step 2/6 : RUN mkdir /files
 ---> Running in bbbbada6271f
Removing intermediate container bbbbada6271f
 ---> 5b0a621eee29...