[Zope] is zope a solution?

Bill Anderson bill@immosys.com
02 Sep 2001 03:21:39 -0600


On Fri, 2001-08-31 at 13:39, tonyl wrote:

Sorry, coming in a bit late in the game perhaps but ...

> On Friday 31 Aug 2001 20:18 pm, Jim Penny wrote:
> 
> >
> > Yes, I am saying that the version I have crashes once or twice a week.
> > No, it does not make it at all unusable.  There are 86400 minutes in
> > a week. this makes it available  99.9976% of the time.  It is automatically
> > restarted after a minute without response goes by, so I do not have to
> > be here, etc.
> >
> 
> What planet are you using zope on Jim.? Your days last a real long time (or 
> my maths is awful) ;-)
> 
> > Apache in my experience is better in terms of uptime.  But I have had it
> > crash, too.  I have had PostgreSQL crash.  I have has AS/400 services
> > crash.  Once you get beyond 3 9's of uptime, it starts to cost money.
> > I am running on clone hardware with no ECC, etc.  Prepare not to have
> > 99.999% uptime, and you can handle 99.99% uptime quite well.
> 
> For me, the issue is which of those minutes it's out of action. In my 
> situation, the application will be hammered at the start of the month, week 
> and morning (in that order). Most of the available minutes for statistical 
> purposes won't have much in the way of system activity. So 1 minute in peak 
> time is quite a high %age for the project. The equipment will probably be an 
> 8 way sun box with oracle.

In your case, I would recommend ZEO.

ZEO will take better advantage of your hardware, and will provide much
more stability, or at least redundancy. I would run, say, 4-8 ZEO
Servers, serving from a local ZSS. I would then put these behind, say,
Balance, for example. You could further enhance things, by perhaps
putting the whole sha! behind Apache, using Proxypass, or behind Squid.
This will have the added benefit of caching your static data, which
will, in turn, free up Zope a little more. 

I have done similar setups on HP N-Class machines. It works beautifully.


> > Given my experience, I can whole-heartedly recommend zope, and I
> > suspect that most users would find less trouble with it than I do.
> 
> Sounds good to me (don't like the window for dhtml entry though)!


So don't use it. I use gvim/vim for my editing, and upload using the
upload button. :)

Cheers,

Bill