To get the most out of this book

• All Go code in this book is assuming Go version 1.10. You can get the latest version from https://golang.org/dl/.
• All Ruby code in this book assumes Ruby 2.5, which can be acquired from https://www.ruby-lang.org/en/downloads/releases/.

Download the example code files

You can download the example code files for this book from your account at http://www.packtpub.com. If you purchased this book elsewhere, you can visit http://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 http://www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the on-screen 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/Real-World-SRE. We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

Download the color images

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://www.packtpub.com/sites/default/files/downloads/RealWorldSRE_ColorImages.pdf.

Conventions used

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. For example: "This creates an instance of the StatsD class to talk to a StatsD server that is running on port 9125 on the local machine."

A block of code is set as follows:

    "hello world"
  end
end

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

    "hello world"
  end
end

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

$ curl google.com

Bold: indicates a new term, an important word, or words that you see on the screen, for example, in menus or dialog boxes also appear in the text like this. For example: "A Service Level Indicator (SLI) is a possible most important metric for the business."

Note

Warnings or important notes appear like this.

Tip

Tips and tricks appear like this.