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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

Votes

Now that we have modeled questions and answers in our application, it's time to think about how voting might work.

Let's design it a little:

Users vote answers up and down based on their opinion of them
Answers are ordered by their score so the best ones appear first
Each person is allowed one vote per answer
If a user votes again, they should replace their previous vote

We will make use of a few things we have learned so far in this chapter; transactions will help us ensure the correct score is calculated for answers, and we'll use predictable keys again to ensure that each person gets only one vote per answer.

We will first build a structure to represent each vote and use field tags to be a little more specific about how we want the data store to index our data.

Indexing

Reads from Google Cloud Datastore are extremely fast due to the extensive use of indexes. By default, every field in our structure is indexed. Queries that attempt to filter on fields that aren't indexed will fail (the method...

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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

Table of Contents (38) Chapters

Votes

Indexing

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Authors (3)

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