Juan M. Tirado - Build Systems With Go: Everything a Gopher must know

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Build systems with Go

Everything a Gopher must know

Juan M. Tirado

Build systems with Go

by Juan M. Tirado

Copyright 2021

Independently published

Cover by Juan M.Tirado

Gopher Gotham image by Egon Elbre (@egonelbre)

All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording or by any information storage or retrieval system, without the prior written permission of the copyright owner.

This book has been entirely written using L A T E X.

EPub 3.0 conversion was done using tex4ebook:

https://github.com/michal-h21/tex4ebook

Revision History:

• v0.1.0 : 2021-03-29 First version

Preface

Welcome and thank you for reading these lines.

Since I started programming in Go, I have always enjoyed its extraordinary commitment to simplicity. It is difficult to find another language that can make complex things so easily. That is the beauty of this language. Years have passed by and Go is no longer the new kid on the block, it has already become a mature language surrounded by a rich ecosystem of libraries, projects, and tools. Talking about Go is no longer talking about that fancy language that makes your life easier. Go is the gravity centre of a continuously growing ecosystem of amazing solutions maintained by a devoted community of developers.

Go was originally designed to simplify the building of complex systems. However, when a developer decides to learn Go most of the learning resources simply explain the language. This book goes one step further by exploring tools, libraries, and projects from the Go ecosystem you can use to build ready-for-production systems. Everything a gopher must know in a single book.

I hope you find this book useful.

Who should read this book?

This book is oriented to new Go adopters and developers with programming experience in other languages. The first part of this book covers the Go language from its basics to more advanced concepts. The second part assumes these concepts to be known by the reader and explores how to use them with other tools to build systems. If you are new to Go you can start from the beginning. However, if you have some experience you can start with the second part and revisit any basic concept if needed. Or you can simply go and check the chapters at your convenience.

Structure of this book

This book is structured to easily find those pieces you may find more interesting for your work. However, if you are an absolute beginner or you do not feel very comfortable with all the concepts explained in this book you can always start from the beginning. Whatever your use case is, these are the contents of this book.

• Part
  The first part explores the language from the very basics to advanced tools offered by the standard library.
• Chapter
  This Chapter is specifically written to motivate newbies to run their first Go program.
• Chapter
  This Chapter explains all the Go basics including syntax, variables, types, pointers, functions, and execution flow.
• Chapter
  Go includes powerful native data structures such as arrays and maps. This Chapter extends previous concepts and shows the reader how to write her first data processing solutions.
• Chapter
  This Chapter describes how Go defines advanced data structures, their associated methods, and interfaces.
• Chapter
  By exploring how Go uses reflection, the reader can understand the many possibilities of manipulating in-memory data structures.
• Chapter
  Concurrency is not an easy topic. However, this Chapter demonstrates how Go help developers to design complex solutions effortless. This Chapter covers goroutines, channels, concurrency statements, contexts and more.
• Chapter
  Any program requires to write or read data to and from different sources. This Chapter explains through examples how Go provides I/O support.
• Chapter
  The Go standard library offers by default solutions to work with encodings such as CSV, JSON or XML. This Chapter, explains how to use these encodings and others not available by default.
• Chapter
  This Chapter explains how we can implement our own HTTP clients and servers, and how to deal with requests, cookies, headers or middleware.
• Chapter
  Templates are pieces of data than can be filled programmatically. This Chapter explains how to define, customize, and use them.
• Chapter
  This Chapter will show the reader how simple it is to execute testing routines and benchmarks in Go. Additionally, it will introduce the reader how to run coverage tests and execution profiles.
• Chapter
  This Chapter explains how to manage dependencies in Go and how to document code.
• Part
  The second part of the book is oriented to those readers who feel comfortable with the language and want to explore solutions from the Go ecosystem that can be used to build sophisticated systems.
• Chapter
  This Chapter reviews what is the protocol buffer serialization format and how to use it with Go.
• Chapter
  Read this Chapter if you need of a fast, modular, and easy-to-deploy message protocol in your system. This Chapter explains how to define services, servers, clients, streaming, and interceptors.
• Chapter
  This Chapter shows the reader how to log a program using the powerful Zerolog library.
• Chapter
  Complex programs require complex command line interfaces. This Chapters, shows the developer how to define and integrate the Cobra library in their projects to obtain professional CLIs with minimal effort.
• Chapter
  This Chapter introduces how the standard library can be used to manipulate and query data from SQL databases. Additionally, it explores how to use the GORM library for ORM solutions.
• Chapter
  NoSQL database solutions are quite common and the Go ecosystem offers solutions to work with them. This Chapter, explains how to operate with Apache Cassandra using the GoCQL client.
• Chapter
  This Chapter reviews the basics of Apache Kafka and overviews three different solutions to interact with this streaming platform.

Conventions

This book is built around self-contained examples. These examples are minimalist pieces of code that help the reader becoming familiar with the explained concepts. Examples are small enough to bring the reader an idea of how a real program looks like. Some examples may print something to help the reader, in that case, the expected output is shown for the readers convenience.

This is how an example looks like.

: Title of this example.

In the left side

of this box,

you can find

the code for

this example

The output goes here.

Additional tips and notes can be found across the book.

	This is a warning note.
	This is a curiosity or tip with additional information.

The code

This book contains a large number of examples fully available at the authors GitHub repository under the Apache license:

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