for software, balance.sourceforge.net is excellent

for hardware, be prepared to spend some cash

Filip

> -----Original Message-----
> From: Mats Andersson [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, September 10, 2003 1:50 AM
> To: Tomcat Users List
> Subject: Re: Tomcat 5 clustering
> 
> 
> Can anyone recommend a good solution for an external loadbalancer. I 
> need it to
> have failover (two physical servers or something) and they must listen 
> on the same
> IP of course. Another preference is a low price. My actual question is, 
> how do you do these
> things with Tomcat?
> 
> Thanks in advance!
> Mats
> 
> Ralph Einfeldt wrote:
> 
> >There are two options:
> >- Use sticky session.
> >  In this scenario you don't need session sharing to do 
> >  load balancing, but it would make the system more fail 
> >  safe. (If one tomcat gets out of service, sticky sessions 
> >  without session sharing loose all data from the current 
> >  sessions on this server)
> >
> >- Use no sticky sessions.
> >  In this case session sharing is a must.
> >
> >You can have loadbalancing without apache and still use 
> >one domainname. Just use an external loadbalancer.
> >
> >  
> >
> >>-----Original Message-----
> >>From: Jan Agermose [mailto:[EMAIL PROTECTED]
> >>Sent: Tuesday, September 09, 2003 3:50 PM
> >>To: Tomcat Users List
> >>Subject: Re: Tomcat 5 clustering
> >>
> >>
> >>If you have apache in front of the different tomcat 
> >>instances, apache would route the same browsersession 
> >>to the same tomcatinstance on each request, or
> >>not? This would make session sharing useless?
> >>
> >>    
> >>
> >
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> >
> >  
> >
> 

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