Fantastic! Thanks for the clarification.
On Tue, 06 Feb 2007 20:17:17 -0600, Tim Lucia <[EMAIL PROTECTED]> wrote: >> -----Original Message----- >> From: Rob Bugh [mailto:[EMAIL PROTECTED] >> Sent: Tuesday, February 06, 2007 3:22 PM >> To: Tomcat Users List >> Subject: Re: Session Affinity and Session Replication >> >> >> Thanks, for the information. My confusion in part stems from this comment >> in the The Apache Tomcat Connector - Reference Guide, >> http://tomcat.apache.org/connectors-doc/reference/workers.html >> >> In the comments for sticky_session: "... Set sticky_session to False when >> Tomcat is using a Session Manager which can persist session data across >> multiple instances of Tomcat...". Also, I've seen other comments in this >> mailing list that would indicate not to use both at the same time. > > If session replication is on, and synchronous (the replication completes > prior to the request completing) then you do not need session affinity as > all cluster members will have the up-to-date session data. > > If you use an asynchronous mechanism for replication, you will slightly > improve your response time, but at the possible cost of the next request > coming to a different cluster member which is not yet up-to-date. > > Combining affinity and replication gives the session a "preferred" server, > with seamless failover. > > Not only does it work, but it works really, really well. I have been using > it in a production site now for almost a year, with one Apache+mod_jk, and > three Tomcats. You can shut down one Tomcat for maintenance, bring it up, > and shut down the next, etc., and nobody is ever the wiser. > > Tim > >> Regards, >> Rob >> >> -----Original Message----- >> >From: Hassan Schroeder <[EMAIL PROTECTED]> >> >Sent: Feb 6, 2007 2:00 PM >> >To: Tomcat Users List <users@tomcat.apache.org>, Rob Bugh >> <[EMAIL PROTECTED]> >> >Subject: Re: Session Affinity and Session Replication >> > >> >On 2/6/07, Rob Bugh <[EMAIL PROTECTED]> wrote: >> > >> >> All the documentation I've read to date indicates not to use sticky >> >> sessions and session replication together. >> > >> >Can you cite where you saw that? >> > >> >I've set up a similar config (using mod_proxy_ajp) with both sticky >> >sessions and session replication and it worked fine. >> > >> >FWIW, >> >-- >> >Hassan Schroeder ------------------------ [EMAIL PROTECTED] >> > >> >--------------------------------------------------------------------- >> >To start a new topic, e-mail: users@tomcat.apache.org >> >To unsubscribe, e-mail: [EMAIL PROTECTED] >> >For additional commands, e-mail: [EMAIL PROTECTED] >> > >> >> >> --------------------------------------------------------------------- >> To start a new topic, e-mail: users@tomcat.apache.org >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- Rob Bugh --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
