You can certainly run multiple vhosts in front of a single CF instance. The nitty-gritty will depend on what you're specifically attempting to do, but it absolutely works. And so does the reverse (running single vhost in front of multiple CF instances).
The more instances you have, the more times you have to pay JVM overhead. I.e., each JVM needs to load all the boilerplate Java stuff, so with 25 instances, you're effectively loading the Java core 25 times into memory. Obviously that's very desireable if you need differentiation between your instances (different JVM version, different security provider, etc.), but if you want the same thing for everything, it can be needlessly expensive. Somewhere between running a single instance and running a bunch of different instances is running multiple webapps within a single server instances. Then you pay the CF overhead each webapp, but the JVM overhead only once per server. The short answer is that you have a lot of options, and CF will support the majority of them. The only place I've gotten into trouble is trying to merge the CF webapp with other webapps and then run a single combined webapp. But it doesn't sound like that's what you're interested in, so I think you should be good. cheers, barneyb On Mon, Apr 4, 2011 at 5:22 PM, Jennifer Lehmann <[email protected]> wrote: > > I am in the planning stage of putting CF9 Enterprise on Windows 2008 R2. We > are going to be setting up multiple instances in all environments, dev, test, > qa and prod. We currently are on Windows 2003 with CF8 and using instances > in dev only. > > I need to know a few things: > 1. We have about 4 web sites that the developer wants to merge into 1 > instance. I don't think I can do that, can I? > 2. Is there a way to join 1 instance to multiple host header sites? Or can > you do anything with host headers and 1 instance? > 3. What overhead do I face with 25 instances on 1 server with 64 GB of RAM > when I can create multiple jvm.configs and parse out that memory to the > instances? > > This probably only skirts the questions I have but I have management pressing > me for answers and I can't find any anywhere. > . > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-server/message.cfm/messageid:6933 Subscription: http://www.houseoffusion.com/groups/cf-server/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-server/unsubscribe.cfm
