Is session-aware LB a function of CF Enterprise and Cluster Cats or is this
somethimg that can be implemented using WDDX?
What I am unsure of is the nature of establishing the session initially in a
clustered environment.
For example user1 hits server1 in the cluster and then a session is
established. For the second page request the LB sends user1 to server4.
User1's session established on server1 is authenticated by
1) CF Enterprise?
2) Clsuter Cats?
3) both in concert with each other?
Also, upon closing the browser how does each server know when the browser
has been shut down so the session variables are deleted? If the browser is
closed while user1 is on server4 how will server1 know this?
Finally is there a primary server that sets all the session variables or can
any server set them? What would one need to do to in either case?
Thanks
James McCullough
-----Original Message-----
From: Dave Watts [mailto:[EMAIL PROTECTED]]
Sent: Saturday, December 09, 2000 6:42 AM
To: CF-Talk
Subject: RE: Session Variables over Clustered Servers
> I was under the impression that session variables were stored
> in RAM on the server. Is it possible for a session variable to
> persist moving from one server in a cluster to another?
Your impression is correct. Session variables are specific to a single
physical server, and will not persist across servers within a cluster.
However, you can use session variables within a clustered application, as
long as the cluster is using session-aware load balancing, which directs a
user's initial request to a server, and all subsequent requests from that
user to the same server.
Dave Watts, CTO, Fig Leaf Software
http://www.figleaf.com/
voice: (202) 797-5496
fax: (202) 797-5444
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