Book Image

Go Programming Cookbook - Second Edition

By : Aaron Torres
Book Image

Go Programming Cookbook - Second Edition

By: Aaron Torres

Overview of this book

Go (or Golang) is a statically typed programming language developed at Google. Known for its vast standard library, it also provides features such as garbage collection, type safety, dynamic-typing capabilities, and additional built-in types. This book will serve as a reference while implementing Go features to build your own applications. This Go cookbook helps you put into practice the advanced concepts and libraries that Golang offers. The recipes in the book follow best practices such as documentation, testing, and vendoring with Go modules, as well as performing clean abstractions using interfaces. You'll learn how code works and the common pitfalls to watch out for. The book covers basic type and error handling, and then moves on to explore applications, such as websites, command-line tools, and filesystems, that interact with users. You'll even get to grips with parallelism, distributed systems, and performance tuning. By the end of the book, you'll be able to use open source code and concepts in Go programming to build enterprise-class applications without any hassle.
Table of Contents (16 chapters)

Creating storage interfaces for data portability

When working with external storage interfaces, it can be helpful to abstract your operations behind an interface. This is for ease of mocking, portability in the event you change storage backends, and isolation of concerns. The downside to this approach may come if you need to perform multiple operations inside a transaction. In that case, it makes sense to make composite operations, or to allow them to be passed in via a context object or additional function arguments.

This recipe will implement a very simple interface for working with items in MongoDB. These items will have a name and price and we'll use an interface to persist and retrieve these objects.

Getting ready

Refer to the steps given in the Getting ready section in the Using NoSQL with MongoDB recipe.

How to do it...

These steps cover writing and running your application:

  1. From your Terminal or console application...