For this book, you need a laptop/PC with Linux (Ubuntu 18.04), macOS X >=10.13, or Windows installed. We will use Go 1.13.x as the version of our compiler and will install many third-party packages, so a working internet connection is required.

We will also use Docker in the final chapters to explain the concepts of API Gateway. Docker's latest stable version is recommended. If Windows users have problems with the native Go installation or using CURL for any examples, use Docker Desktop for Windows and run an Ubuntu container to test your code samples; refer to https://www.docker.com/docker-windows for more details.

Before diving into the book, refresh your language basics at https://tour.golang.org/welcome/1.

Even though these are the basic requirements, we will guide you through the installations whenever required.

You can download the example code files for this book from your account at www.packt.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packt.com.
2. Select the Support tab.
3. Click on Code Downloads.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Hands-On-Restful-Web-services-with-Go. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://static.packt-cdn.com/downloads/9781838643577_ColorImages.pdf.

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Name the preceding program basicHandler.go."

A block of code is set as follows:

{
 "ID": 1,
 "DriverName": "Menaka",
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

{
 "ID": 1,
 "DriverName": "Menaka",
}

Any command-line input or output is written as follows:

> go run customMux.go

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "It returns a message saying Logged In successfully."