Nice book describing how to set up, administrate and manage Oracles application server. There are chapters describing how to add a web cache to enhance performance. Amusing.
Page 8 states:
"Internal Oracle tests reveal that adding the application Server 10g Web
Cache to a three-tiered application (client, application server, and database
tiers) can reduce the load on the database back end by 95 percent."
while page 156 states:
"One Oracle test showed that adding the Oracle Web cache in front of the
Oracle Application Server reduced database load by over 85 percent"
Either it was a different test or they sell two products: one for a
performance boost of 95 and one for 85 percent ;)