Process flow when Viewing CrystalReports through DHTML Viwer

What is the information flow when Viewing Crystal Reports through DHTML viewer,

How does RAS process the View Report request?

From the forums I understand that RAS (Report Application Server ) comes in to picture while viewing CR report.

In BusinessObjects Admin guide 3.1 on page #119 viewing a report on demand when the default view format is set to Web Java is explained.

In this flow the Cache server and processing server comes in to picture.

What is the flow when RAS will be processing the Viewing Request?

I guess RAS has its own caching mechanism, Right ?

Thanks

-p