Christopher Jordan wrote:
So the very general question is what benefits do we get from switching
to the enterprise edition?
More specifically though:
1. Is my client right? Can we only do this sort of three-tiered
architecture using the enterprise edition of CF?
Yes you can, we're working on implementing this in the next couple of
months.
2. We're anticipating that we will have between 300 and 500 users
(give or take) when all is said and done. That compares to *maybe*
a hundred users right now. Is that sufficient to require clustering?
Doubtful. You may only need a pair of load balanced CF Standard servers
for that few users.
3. If we do end up getting enterprise and wanting to cluster servers
together, is that difficult to set up? And...
It's not really difficult, just annoying.
4. ... would I have to make any changes to the way that I code to
take advantage of clustering?
We've got 8 clustered CF servers and I don't think we code any
differently than I have in the past. You only have to write things
differently if you're doing OO with multiple instances and are placing
objects into application or session variables.
5. What are the advantages/disadvantages of running CF as a service
versus running it as an instance on a J2EE application server? (am
I saying that right?)
When you create an instance of CF on Windows, there's an option to
create a Windows service for it as well.
When you run multiple servers and multiple instances on each server,
when an error occurs you need to know exactly which server & instance
the user was on when it happened. Go to http://www.unitrinspecialty.com
and Ctrl+A to select all the text on the page. We place that info in
white text under the footer and pass it in hidden field values on the
form that users get when an error happens.
Unless you're going to need Event Gateways (aren't they going to be in
CF 8 Standard?) or multiple instances I don't see any reason to go to
Enterprise. But if you do and you don't want to use JRun, CF 8
officially supports JBoss. There's no need use Weblogic or some of those
other high dollar J2EE application servers when JBoss is free.
HTH,
Adrian
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