Delphi ISAPI performance vs native server

Question

I have to make a public facing web application that does dynamic pages, sessions and serving documents. My main concerns are scalability, performance (around 1000 users/hour) and security.

I have looked at ISAPI extensions(IIS) and native servers. In terms of performance and scalability are ISAPI extensions better than native servers?

If developing a native server, what are good frameworks? Would something like realthinclient be worth it for the money?

Answer 1

ISAPI works as a native extension to IIS and so long as your ISAPI dll is well constructed, performance should be the same or better than if you constructed your own proprietary web server. I would recommend creating an ISAPI extension to IIS rather than a separate web server - you get a lot of benefits from IIS (its threading model, application pools, etc), especially version 7 and later.