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)

Using async producers with Kafka

It's often useful not to wait for a Kafka producer to complete before moving on to the next task. In cases like this, you can use an asynchronous producer. These producers take Sarama messages on a channel and have methods to return a success/error channel that can be checked separately.

In this recipe, we'll create a Go routine that will handle success and failure messages while we allow a handler to queue messages to send, regardless of the result.

Getting ready

Refer to the Getting ready section ofthe Using Kafka with Sarama recipe.

How to do it...

These steps cover writing and running your application:

  1. From your Terminal or console application,createa new directory called~/projects/go-programming-cookbook/chapter12/asynckafkaand navigate to this directory.
  2. Run this command:
          $ go mod init github.com/PacktPublishing/Go-Programming-Cookbook...