Book Image

Go Cookbook

By : Aaron Torres
Book Image

Go Cookbook

By: Aaron Torres

Overview of this book

Go (a.k.a. Golang) is a statically-typed programming language first developed at Google. It is derived from C with additional features such as garbage collection, type safety, dynamic-typing capabilities, additional built-in types, and a large standard library. This book takes off where basic tutorials on the language leave off. You can immediately put into practice some of the more advanced concepts and libraries offered by the language while avoiding some of the common mistakes for new Go developers. The book covers basic type and error handling. It explores applications that interact with users, such as websites, command-line tools, or via the file system. It demonstrates how to handle advanced topics such as parallelism, distributed systems, and performance tuning. Lastly, it finishes with reactive and serverless programming in Go.
Table of Contents (14 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 case you change storage backends, and isolation of concerns. The downside to this approach may come if you need to perform multiple operations inside of a transaction. In that case, it makes sense to make composite operations, or to allow it to be passed in via a context object or additional function arguments.

This recipe will implement a very simple interface to 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...