Session variables CANNOT span servers. CF 4.5 clustercats can do "sticky" sessions, which means that the first server the user hits is the one they use for the duration of their visit (I'm not sure if this is done via cookie or URL), and therefore you can use session variables since the user will be sticking with one server. This, of course, doesn't work if the server goes away.
Client, form and cookie variables seem to be the accepted means for state maintenance in clustercats clusters. I have used client variables and am pretty happy with them. > -----Original Message----- > From: Shawn Grover [mailto:[EMAIL PROTECTED]] > Sent: Thursday, December 20, 2001 11:52 AM > To: CF-Talk > Subject: Session variables on clustered servers? > > > I know Sessions variables can span a cluster, but am not sure of the > details/gotchas. > > My experience with clusters is non-existent, but it looks > like I'm going to > be getting a crash course soon. So, I need to know some details for > ensuring my sites work well over a cluster. I'm assuming the > cluster will > be using CF5's clustering capabilities. (well, I know CF4.5 > did it, and > assume CF5 does as well). > > Are session variables a reasonable option on a cluster? or > should I be using > Client variables with a DSN for storage? Are there any > gotcha's I need to > be aware of with regards to the Session varibles? > > Thanks for any tips/suggestions. > > ______________________________________________________________________ Dedicated Windows 2000 Server PIII 800 / 256 MB RAM / 40 GB HD / 20 GB MO/XFER Instant Activation � $99/Month � Free Setup http://www.pennyhost.com/redirect.cfm?adcode=coldfusiona FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/[email protected]/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
