Re: I'm new to prevayler: will Prevayler ever be able to share an object across 2 or more computers?

If it's possible, I wanna do it. :)

But seriously, I live in the UK where luckily we have hardly any power cuts
(maybe once every three years, and it lasts about 5-10 minutes), but I'll
still probably get some kind of battery (uninterruptable power supply)
backup anyway. So yeah, I'd REALLY like to maintain the availability of my
app whenever I do any hardware upgrades, and be able to just hot-swap
computers whenever I like.

Wasn't this planned for version 3 of Prevayler? Has it already been done
yet?
There has to be a way I can make this happen in version 2.3 of Prevayler,
right?


On 12 October 2011 21:22, Ralph Johnson <[email protected]> wrote:

> On Wed, Oct 12, 2011 at 11:09 AM, Naveen Chawla <[email protected]>
> wrote:
>
> > That's great. I'm ignorant of these things, thanks.  Are you suggesting
> you
> > can install new memory while that same server computer is still running?
> Or
> > is this only possible in a multi-computer set up with replication? If
> only
> > by replication, are there any good tutorials for this? And what hardware
> do
> > you recommend I buy? Two 64-bit computers, correct?
> >
> > If I use replication, I can just keep hot-swapping/upgrading any of the
> > computers any time, as long as one is still running, right? This without
> any
> > disruption to my web app?
>
> It is possible to make systems that run 365 days year, 24 hours a day.
>  However, it is not trivial.   Anybody who does this needs to be
> pretty experienced.  In your case, that probably means finding someone
> to help.
>
> Do you really need to never turn it off?  Can you ensure that power
> runs 100% of the time?  In other words, do you have your own
> generators?   If you don't have your own generators then you have
> already decided that your computers will be down for short periods of
> time, and you might as well use that time to upgrade the hardware.
>
> It is all possible, but so few people do it that it is hard to find
> people with the experience.
>
> -Ralph Johnson
>
>
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------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2d-oct

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To unsubscribe go to the end of this page: http://lists.sourceforge.net/lists/listinfo/prevayler-discussion
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