Book Image

Scala Reactive Programming

By : Rambabu Posa
Book Image

Scala Reactive Programming

By: Rambabu Posa

Overview of this book

Reactive programming is a scalable, fast way to build applications, and one that helps us write code that is concise, clear, and readable. It can be used for many purposes such as GUIs, robotics, music, and others, and is central to many concurrent systems. This book will be your guide to getting started with Reactive programming in Scala. You will begin with the fundamental concepts of Reactive programming and gradually move on to working with asynchronous data streams. You will then start building an application using Akka Actors and extend it using the Play framework. You will also learn about reactive stream specifications, event sourcing techniques, and different methods to integrate Akka Streams into the Play Framework. This book will also take you one step forward by showing you the advantages of the Lagom framework while working with reactive microservices. You will also learn to scale applications using multi-node clusters and test, secure, and deploy your microservices to the cloud. By the end of the book, you will have gained the knowledge to build robust and distributed systems with Scala and Akka.
Table of Contents (16 chapters)

Akka Materialization

In this section, we will talk about one of the important key concepts of Akka Streams—Materialization. If you are not that keen to know what happens when we run a Graph or RunnableGraph under the hood, you can skip this section and move on to the next section.

What is materialization?

In general, materialization means generating a value (or a set of values) by performing an operation (or some set of operations) on a data element (or a set of data elements).

In simple Akka Streams API terminology:

Then why do we need to know this in Akka Streams? What is the relationship between this concept and Akka Streams? Good questions.

Let's explore this Akka Toolkit's component in more detail in...