Re: Multiple data centers and redundency?

2009-08-27 Thread Leon Rosenberg
Hello, You may want to take a completely different approach. 1) If your session is lightweight (no really heavy objects) you could store everything in cookies and go completely session and stateless. This would solve most of the problems. 2) If 1. isn't applicable - persist the session to a

RE: Multiple data centers and redundency?

2009-08-26 Thread George Sexton
-Original Message- From: Andre-John Mas [mailto:aj...@sympatico.ca] Sent: Tuesday, August 25, 2009 6:30 PM To: Tomcat Users List Subject: Multiple data centers and redundency? Hi, I have been asked to look into a solution that would involve a few different data centres each

RE: Multiple data centers and redundency?

2009-08-26 Thread Jeffrey Janner
) -Original Message- From: George Sexton [mailto:geor...@mhsoftware.com] Sent: Wednesday, August 26, 2009 9:52 AM To: 'Tomcat Users List' Subject: RE: Multiple data centers and redundency? -Original Message- From: Andre-John Mas [mailto:aj...@sympatico.ca] Sent: Tuesday, August 25, 2009 6:30

RE: Multiple data centers and redundency?

2009-08-26 Thread George Sexton
-Original Message- From: Jeffrey Janner [mailto:jeffrey.jan...@polydyne.com] Sent: Wednesday, August 26, 2009 12:53 PM To: Tomcat Users List Subject: RE: Multiple data centers and redundency? George - This is why I hate statistics. You can make them say anything. Wouldn't

RE: Multiple data centers and redundency?

2009-08-26 Thread Jeffrey Janner
See comments [Jeff] below: -Original Message- From: George Sexton [mailto:geor...@mhsoftware.com] Sent: Wednesday, August 26, 2009 2:39 PM To: 'Tomcat Users List' Subject: RE: Multiple data centers and redundency? -Original Message- From: Jeffrey Janner [mailto:jeffrey.jan

[OT?] Re: Multiple data centers and redundency?

2009-08-26 Thread André Warnier
Jeffrey Janner wrote: George - This is why I hate statistics. You can make them say anything. I was thinking the same thing, remembering the recent financial troubles. 1/( (2 hours)/24(Hours day) * 1/(3*365))/2 (Data centers) - customers don't work 24 hours a day, they usually work 8 hours

Re: Multiple data centers and redundency?

2009-08-25 Thread Andre-John Mas
Hi, I have just been given some more information. The architecture would involve a DNS server perodically giving out a DNS address for one DNS server and then an address for the other. Each data centre would have multiple hosts, each running multiple tomcats. The load balancer would take

Re: Multiple data centers and redundency?

2009-08-25 Thread Hassan Schroeder
On Tue, Aug 25, 2009 at 5:38 PM, Andre-John Masaj...@sympatico.ca wrote: ... The architecture would involve a DNS server perodically giving out a DNS address for one DNS server and then an address for the other. Huh? I see there is clustering available with Tomcat, but I don't see how this

Re: Multiple data centers and redundency?

2009-08-25 Thread Andre-John Mas
On 25-Aug-2009, at 20:52, Hassan Schroeder wrote: On Tue, Aug 25, 2009 at 5:38 PM, Andre-John Masaj...@sympatico.ca wrote: ... The architecture would involve a DNS server perodically giving out a DNS address for one DNS server and then an address for the other. Huh? Teaches me to