SSP

Capacity Planning

One powerful machine with everything

Apache on one machine load balancing SSP/Tomcat on smaller boxes

Apache

Database

Other BackendSystems

Tomcat/SSP

External cookie-based load balancer with Apache/Tomcat on smaller boxes

Load Balancer/SSL EncryptionEngine

Database

Other BackendSystems

Apache/Tomcat/SSP

Hardware Chart

Can be pricey

$10k – $50k

Apache’s load balancing is limited

Performing SSL with Apache will ramp up the CPU cycles

Cost

Can not scaleCons

Same as with Apache but scaling is better.

Adding in SSL won’t necessarily degrade performance

Can add more boxes easily

Portal computers are relatively inexpensive

Easy to managePros

Dedicated load balancer

Apache load balancing

One Powerful Machine

LinuxSolarisWindows

OS

Software Choices

TomcatResinApache HTTP Server / TomcatApache HTTP Server / ResinSun ONE Web/Application ServerIBM Websphere

Web server / Servlet container

Web Container’s connection poolApache Commons DBCPJDBC Driver connection pool

Connection PoolingPostgreSQLOracle (Planned)SQL Server

Database

SunIBM

JVM