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Mastering Go – Third Edition

You're reading from Mastering Go – Third Edition Harness the power of Go to build professional utilities and concurrent servers and services

Product type Paperback

Published in Aug 2021

Publisher Packt

ISBN-13 9781801079310

Length 682 pages

Edition 3rd Edition

Languages

Go

Tools

gRPC

Concepts

Programming Language

Author (1):

Mihalis Tsoukalos

View More author details

Table of Contents (17) Chapters

Preface

1. A Quick Introduction to Go

2. Basic Go Data Types FREE CHAPTER

3. Composite Data Types

4. Reflection and Interfaces

5. Go Packages and Functions

6. Telling a UNIX System What to Do

7. Go Concurrency

8. Building Web Services

9. Working with TCP/IP and WebSocket

10. Working with REST APIs

11. Code Testing and Profiling

12. Working with gRPC

13. Go Generics

14. Other Books You May Enjoy

15. Index

Appendix A – Go Garbage Collector

Exposing metrics to Prometheus

Imagine that you have an application that writes files to disk and you want to get metrics for that application to better understand how the writing of multiple files has an effect on the general performance—you need to gather performance data for understanding the behavior of your application. Although the presented application uses the gauge type of metric only because it is what is appropriate for the information that is sent to Prometheus, Prometheus accepts many types of data. The list of supported data types for metrics is the following:

Counter: This is a cumulative value that is used for representing increasing counters—the value of a counter can stay the same, go up, or be reset to zero but cannot decrease. Counters are usually used for representing cumulative values such as the number of requests served so far, the total number of errors, etc.
Gauge: This is a single numerical value that is allowed to increase...

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Authors (1)

Mihalis Tsoukalos

Mihalis Tsoukalos

Mihalis Tsoukalos holds a BSc in Mathematics from the University of Patras and an MSc in IT from University College London, UK. His books, Go Systems Programming and Mastering Go, have become must-reads for Unix and Linux systems professionals. He enjoys writing technical articles and has written for Sys Admin, MacTech, C/C++ Users Journal, USENIX ;login:, Linux Journal, Linux User and Developer, Linux Format, and Linux Voice. His research interests include time series data mining, time series indexing, and databases.

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This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

This book not only goes into great depth on Go features usually taken for granted, but also explains how to use an improved understanding of Go internals to optimize Go code, use all Go data types and data structures in new and unexpected ways, and understand how to write Go systems projects, do OS-level coding and build Go network applications.

Apr 2018 20h 12m

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