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You're reading from Go: Design Patterns for Real-World Projects Build production-ready solutions in Go using cutting-edge technology and techniques

Product type Course

Published in Jun 2017

Publisher Packt

ISBN-13 9781788390552

Length 1091 pages

Edition 1st Edition

Languages

Concepts

Design Patterns

Authors (3):

Mario Castro Contreras

Mat Ryer

Vladimir Vivien

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Table of Contents (38) Chapters

Go: Design Patterns for Real-World Projects

Credits

Preface

Bibliography

1. A First Step in Go FREE CHAPTER

2. Go Language Essentials

3. Go Control Flow

4. Data Types

5. Functions in Go

6. Go Packages and Programs

7. Composite Types

8. Methods, Interfaces, and Objects

9. Concurrency

10. Data IO in Go

11. Writing Networked Services

12. Code Testing

13. Ready... Steady... Go!

14. Creational Patterns - Singleton, Builder, Factory, Prototype, and Abstract Factory Design Patterns

15. Structural Patterns - Composite, Adapter, and Bridge Design Patterns

16. Structural Patterns - Proxy, Facade, Decorator, and Flyweight Design Patterns

17. Behavioral Patterns - Strategy, Chain of Responsibility, and Command Design Patterns

18. Behavioral Patterns - Template, Memento, and Interpreter Design Patterns

19. Behavioral Patterns - Visitor, State, Mediator, and Observer Design Patterns

20. Introduction to Gos Concurrency

21. Concurrency Patterns - Barrier, Future, and Pipeline Design Patterns

22. Concurrency Patterns - Workers Pool and Publish/Subscriber Design Patterns

23. Chat Application with Web Sockets

24. Adding User Accounts

25. Three Ways to Implement Profile Pictures

26. Command-Line Tools to Find Domain Names

27. Building Distributed Systems and Working with Flexible Data

28. Exposing Data and Functionality through a RESTful Data Web Service API

29. Random Recommendations Web Service

30. Filesystem Backup

31. Building a Q&A Application for Google App Engine

32. Micro-services in Go with the Go kit Framework

33. Deploying Go Applications Using Docker

1. Good Practices for a Stable Go Environment

Summary

In this chapter, we added three different implementations of profile pictures to our chat application. First, we asked the auth service to provide a URL for us to use. We did this using Gomniauth's abstraction of the user resource data, which we then included as part of the user interface every time a user would send a message. Using Go's zero (or default) initialization, we were able to refer to different implementations of our Avatar interface without actually creating any instances.

We stored data in a cookie for when the user would log in. Given the fact that cookies persist between builds of our code, we added a handy logout feature to help us validate our changes, which we also exposed to our users so that they could log out too. Other small changes to the code and the inclusion of Bootstrap on our chat page dramatically improved the look and feel of our application.

We used MD5 hashing in Go to implement the https://en.gravatar.com/ API by hashing the e-mail address that the...

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Table of Contents (38) Chapters

Summary

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Authors (3)

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