> clustered environment and I was wondering if anyone knew of a
> good comparison between ClusterCATS and Microsoft Network
> Load Balancing on Windows 2000 Advanced Server boxes running
> ColdFusion MX 6.1
>
> From what I've read so far, I don't understand the point of
> needing ClusterCATS. Properly configured, JRun and CFMX can
> handle their own clustering-specific duties (in-memory
> session replication etc)
ClusterCATS (and NLB, generally) typically work at the web server level, and
are typically used to take multiple machines running web servers and
distribute load across them. JRun's clustering, on the other hand, typically
works at the application server level, and may be used to cluster JRun
server instances across machines or on a single machine (or both, I
suppose).
One shortcoming of NLB is that, if JRun fails on a specific machine, NLB
will still direct requests to the machine - it's up to you to detect
services that don't respond correctly. That's pretty easy to do, though.
ClusterCATS provides that functionality, if I recall correctly.
Dave Watts, CTO, Fig Leaf Software
http://www.figleaf.com/
phone: 202-797-5496
fax: 202-797-5444
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