[Spread-users] Fault Tolerant Server

Mike Perik michaelperik at yahoo.com
Thu Dec 9 11:53:50 EST 2004

I would be interested.  

Scaling is another thing that I'm interested in or
load balancing with failover.  Ultimately, I'd like to
split the load across servers and if one of them goes
down the other server(s) would pick up it's load.  

I've implemented a very simple algorithm in which the
servers join a group and send a simple message
requesting who is the current publisher.  It then
backs off a random amount of time ( < 1 sec) and if
after a few requests it hasn't gotten a response it
claims to the be publisher and starts to publish.

In order to do load balancing I would have to move
this type of logic from the group level to the subject

Any other ideas/methods for handling this?


--- David Avraamides
<David.Avraamides at SevernRiverCapital.com> wrote:

> We have implemented a redundant server model here to
> handle both server failures and to provide server
> scale-out where appropriate. Its built on top of
> Spread, thus at this time it doesn't address
> failures of the Spread daemon itself, rather our
> notion of a messaging service that sits on top of
> the Spread network. I'm not sure if that's what you
> meant. I can give more details if you are
> interested.
> -Dave
> ________________________________
> From: spread-users-admin at lists.spread.org on behalf
> of Mike Perik
> Sent: Thu 12/9/2004 9:37 AM
> To: spread-users at lists.spread.org
> Subject: [Spread-users] Fault Tolerant Server
> Has anyone implemented Fault Tolerance into their 
> system.  I'm planning on implementing something that
> would allow multiple servers back each other up.  If
> primary goes down then one of the backups picks up
> the 
> broadcasting of data.  
> I'd be interested in any designs you've use and how 
> they have worked. 
> Thanks, 
> Mike 
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