Book Image

Akka Cookbook

By : Vivek Mishra, Héctor Veiga Ortiz
Book Image

Akka Cookbook

By: Vivek Mishra, Héctor Veiga Ortiz

Overview of this book

Akka is an open source toolkit that simplifies the construction of distributed and concurrent applications on the JVM. This book will teach you how to develop reactive applications in Scala using the Akka framework. This book will show you how to build concurrent, scalable, and reactive applications in Akka. You will see how to create high performance applications, extend applications, build microservices with Lagom, and more. We will explore Akka's actor model and show you how to incorporate concurrency into your applications. The book puts a special emphasis on performance improvement and how to make an application available for users. We also make a special mention of message routing and construction. By the end of this book, you will be able to create a high-performing Scala application using the Akka framework.
Table of Contents (18 chapters)
Title Page
About the Authors
About the Reviewer
Customer Feedback

Marshaling and unmarshaling data

The HTTP protocol is primarily used to transfer information between remote systems. Data needs to be serialized into bytes to be able to be transferred from one point to another; however, manipulating bytes in your application is probably challenging and error-prone. The regular approach to this problem is to create classes in your code that represent the data you are sending or receiving. In addition, you could develop complementary code that would contain the logic to marshall your classes into a byte stream, and of course, unmarshal the incoming byte stream into your classes.

Akka HTTP gets APIs to do the marshaling and unmarshaling automatically as long as you provide the logic to do it. Depending on your use case, you might just want to marshal a part of your HTTP request or response. This is why Akka HTTP provides different levels for marshalers. If you just need to customize the serialization of the HTTP entity (basically the content and content type...