Scaling out help

[NH]

Hi,

If I was to build a saas (software as a service) type of application that
potentially would have 1000 customers and 30,000 users then what kind of
infrastructure would you need?

I have built plenty of smaller applications with IIS and the database on a
single windows 2003 server. But I guess I would need a web farm approach?

So, would that mean 2-3 IIS servers, a seperate DB server, a state server
(?), a load balancer? etc?

Any ideas or pointers would be appreciated.
Thanks
NH

 

[sloan]

If you want to horizontally scale.....then I would suggest

Middle Tier machines exposing WCF services.

Hardware or Software load balancer.


Check this article out:
http://www.codeproject.com/KB/architecture/DudeWheresMyBusinessLogic.aspx

WCF downloadable example:
http://sholliday.spaces.live.com/Blog/cns!A68482B9628A842A!158.entry

Software based Load Balancing:
http://msdn.microsoft.com/en-us/netframework/bb499684.aspx