Book Image

Getting Started with Oracle WebLogic Server 12c: Developer's Guide

Book Image

Getting Started with Oracle WebLogic Server 12c: Developer's Guide

Overview of this book

Oracle WebLogic server has long been the most important, and most innovative, application server on the market. The updates in the 12c release have seen changes to the Java EE runtime and JDK version, providing developers and administrators more powerful and feature-packed functionalities. Getting Started with Oracle WebLogic Server 12c: Developer's Guide provides a practical, hands-on, introduction to the application server, helping beginners and intermediate users alike get up to speed with Java EE development, using the Oracle application server. Starting with an overview of the new features of JDK 7 and Java EE 6, Getting Started with Oracle WebLogic Server 12c quickly moves on to showing you how to set up a WebLogic development environment, by creating a domain and setting it up to deploy the application. Once set up, we then explain how to use the key components of WebLogic Server, showing you how to apply them using a sample application that is continually developed throughout the chapters. On the way, we'll also be exploring Java EE 6 features such as context injection, persistence layer and transactions. After the application has been built, you will then learn how to tune its performance with some expert WebLogic Server tips.
Table of Contents (18 chapters)
Getting Started with Oracle WebLogic Server 12c: Developer's Guide
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Chapter 10. Scaling Up the Application

Most applications must eventually deal with increased workload; some will scale up by adding more memory or CPU to a server and others will scale out by adding more nodes and servers to handle the application load. Here, we're going to cover some of the basic principles to scale your application running on WebLogic Server and understand how to leverage services offered by the container among other tools and products of the WebLogic Suite, such as Coherence.

Scalability is the main theme of this chapter, but inherent in that is high availability; this is a technique to ensure that your application will keep running with an acceptable response time, even when multiple aspects may try to compromise its scalability; for instance, having a huge number of users accessing your application at a given time or simply when one of your servers fail and you need to redirect all requests to the only working node.

To start, we are going to check out the tools and services...