www2.computer.orgBasic Architecture

Leo Wadsworth, Staff Manager

April 2008

Major Components

Ubuntu Linux Xen Virtual

Servers HAProxy Liferay Portal Apache web

servers Tomcat servlet

container

Alfresco content management

MySQL databases OpenX ad server CAS authentication Alfresco Cache

Server DL Cache server

Debian-based Linux distribution Server and desktop versions Easy administration tools

Enterprise cross-domain authentication and single sign on

Integrated with IEEE LDAP Uses IEEE Web Accounts

HAProxy Controls load

balancing and failover Admin tool gives easy

visibility into entire system

Xen Virtual Servers

Standard LAMP Stack

Apache Tomcat

Award-winning enterprise class open-source portal server

Integrated with IEEE web accounts True portal system with tightly integrated

collaborative tools Includes over 60 portlets Page layout of portlets done using drag

and drop Available on a variety of platforms, we are

using Tomcat

Award-winning enterprise class open-source document and content management system

Able to manage millions of items/documents

Integrated with IEEE web accounts Available on a variety of platforms,

we are using Tomcat

World leading enterprise class open-source advertising server

Written using PHP Able to server millions of

impressions in a variety of formats We are running PHP on Apache

webservers

Alfresco Cache Server

Alfresco Cache Server Increases the speed of serving Alfresco

content Consists of clustered Apache servers –

simple, robust, fast Simplifies the role and implementation

of the Alfresco server

Digital Library Cache Server

Increases the speed and robustness of serving Digital Library content

Provides XML data to the Digital Library portlet

Designed for future growth and capabilities

Overall Architecture