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Mastering JBoss Enterprise Application Platform 7

You're reading from   Mastering JBoss Enterprise Application Platform 7 Core details of the Enteprise server supported by clear directions and advanced tips.

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Product type Paperback
Published in Aug 2016
Publisher Packt
ISBN-13 9781786463630
Length 390 pages
Edition 1st Edition
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Authors (2):
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Luigi Fugaro Luigi Fugaro
Author Profile Icon Luigi Fugaro
Luigi Fugaro
Francesco Marchioni Francesco Marchioni
Author Profile Icon Francesco Marchioni
Francesco Marchioni
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Toc

Table of Contents (15) Chapters Close

Preface 1. Installation and Configuration FREE CHAPTER 2. The CLI Management Tool 3. Managing EAP in Domain Mode 4. Deploying Applications 5. Load Balancing 6. Clustering EAP 7 7. Logging 8. Configuring Database Connectivity 9. Configuring EAP 7 for Java EE Applications 10. Messaging Administration 11. Securing the Application Server 12. New Security Features of EAP 7 13. Using EAP 7 with Docker 14. Running EAP 7 on the Cloud Using OpenShift

Load balancing with mod_cluster


mod_cluster is an HTTP-based load balancer that can be used to forward a request to a set of application server instances. Compared to legacy balancing solutions balancing solutions such as mod_jk or mod_proxy, mod_cluster provides the following benefits:

  • Dynamic balancing configuration

  • Pluggable server-side balancing metrics

As far as the first point is concerned, a load balancer is commonly based on a static list of servers where requests are directed. In many cases this can be a limiting factor especially when server nodes can be varied at runtime; besides this, maintaining a static list of servers is error-prone and needs to reshaped every time there is a change in your network.

About the next point, mod_cluster (in contrast to other frontend based balancers) uses load balance factors calculated and provided by the backend application servers, rather than computing these in the proxy. Consequently, mod_cluster offers a more robust and accurate set of load...

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