I am working  on an application  where 10,000 user will submit a heavy-
weight-request(each request involves updating about 50 rows in DB) to
server in 1 minute. This kind of heavy load  will come to application
once in a month and request processing need not be synchronous.

Initially I thought of using JMS asynch messaging(with JBoss) to avoid
instant huge load on DB. However, I still want to stick to using
Tomcat.

Will appreciate any thoughts from people any design  alternatives
people might have, apart from messaging.