round-robin has a couple of disadvantages over sticky sessons: a) you need to replicate state to all nodes - a lot of traffic although with a fiber backplane its most likely not an issue. with sticky sessions you only have to replicate to one or two other nodes which act as backup buddies.
b) you cannot take advantage of data locality. each node can keep its own cache which over a span of a session gets more attuned to what the users on that node are doing, if you use round robin then you lose out on that. -igor On Nov 16, 2007 8:51 AM, saenz <[EMAIL PROTECTED]> wrote: > > Fair enough. Good answer. :) > > Of course I meant in the non-failure case. > > So under normal operations outside of failure conditions, perhaps there > really is no benefit to move users to other nodes during the lifetime of a > session, or at least the difficulty outweighs the benefit. > > - Lu > > > > > Martijn Dashorst wrote: > > > > failover? > > > > On 11/16/07, saenz <[EMAIL PROTECTED]> wrote: > >> > >> > >> Johan Compagner wrote: > >> > > >> > On Nov 15, 2007 11:22 PM, Eelco Hillenius <[EMAIL PROTECTED]> > >> > wrote: > >> >> Recommended is to use sticky sessions. > >> > > >> > +10000 > >> > > >> > none sticky sessions are flawed anyway.. (or the synchronizing > >> performance > >> > hit is so great it doesn't make any sense, it it makes sense to start > >> > with...) > >> > > >> > >> Johan, are you saying that other types of load balancing strategies > >> besides > >> sticky sessions are all flawed, and that it only makes sense to use > >> sticky > >> sessions? Please correct my understanding. > >> > >> If sticky sessions are the only recommended way to do load balancing, > >> then > >> what is the reason to support replication of session state across > >> multiple > >> nodes in a cluster? > >> > >> - Lu > >> -- > >> View this message in context: > >> http://www.nabble.com/Disabling-serialization-storage-of-pages-in-session--tf4768006.html#a13796491 > >> Sent from the Wicket - User mailing list archive at Nabble.com. > >> > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [EMAIL PROTECTED] > >> For additional commands, e-mail: [EMAIL PROTECTED] > >> > >> > > > > > > -- > > Buy Wicket in Action: http://manning.com/dashorst > > Apache Wicket 1.3.0-rc1 is released > > Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0-rc1/ > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > -- > View this message in context: > http://www.nabble.com/Disabling-serialization-storage-of-pages-in-session--tf4768006.html#a13796995 > > Sent from the Wicket - User mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
