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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: TOMCAT CLUSTERING HOWTO
Date Thu, 08 May 2008 15:44:35 GMT
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Chuck,

Caldarale, Charles R wrote:
|> Clustering does not work without a load balancer. Period.
|
| Not strictly true.  Clustered Tomcats don't care if the requests are
| coming through a load balancer or someone manually changing port or
| IP addresses on each request.

Fair enough. I suppose I consider a cluster to be something that shares
work via a single point of access, not just something that shares data.
I think of "clustered sessions" as "shares sessions" within a cluster,
where the cluster handles work as a whole.

Having different clients connect specifically to one node in a "cluster"
is merely using shared sessions to me. That would kind of be like
calling several servers using the same database a "cluster" because they
share data.

| Certainly for any practical usage, a front end of some sort is
| required to automatically route requests, but it doesn't have to
| actually do any load balancing.

Agreed.

- -chris
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