Book Image

Learning Play! Framework 2

By : Andy Petrella
Book Image

Learning Play! Framework 2

By: Andy Petrella

Overview of this book

<p>The Learning Play! Framework 2 has been created for web developers that are building web applications. The core idea is to focus on the HTTP features and to enable them through a simplification lens. Building a web application no longer requires a configuration phase, an environment setup, or a long development lifecycle - it's integrated!<br /><br />Learning Play! Framework 2 will enable any web developers to create amazing web applications taking advantage of the coolest features. It's the fastest way to dive into Play!, focusing on the capabilities by using them in a sample application. Although essentially Java based code, a Scala version is presented as well – giving an opportunity to see some Scala in action.<br /><br />After setting up the machine and learning some Scala, you will construct an application which builds from static to dynamic, before introducing a database. <br /><br />Then we'll focus on how data can be consumed and rendered in several ways. This will enable some real time communication through WebSocket and Server-Sent Event – on both server and client sides.</p> <p>The book will end with testing and deployment, which completes any web development project.</p>
Table of Contents (20 chapters)
Learning Play! Framework 2
Credits
About the Author
Acknowledgement
About the Reviewers
www.packtpub.com
Preface
Materials
Index

Chapter 7. Web Services – At Your Disposal

Nowadays, all web applications have to connect with external services. Delegating difficult or complex computations to them or interacting on a social network are just some examples among thousands. Indeed, this means that our application can focus on what it is built for and it will ask other applications for specific needs.

This leads to the SOA architecture, which is more prone to the separation of concerns among services that have a clean and simple definition. A web service is one such dedicated service but is available online. In this chapter, we will discuss how to integrate a Play! Framework 2 application with such an architecture involving web services.

This kind of distributed architecture can lead to some problems because it relies on remote services, which most of the time don't have guaranteed SLAs. So they might block the server until a response is given or a timeout has occurred; meanwhile, other users who could have sent requests to...