Re: Fwd: Re: [PHPLIB] Re: [PHP3] persistent data From: Gary Bickford (garyb <email protected>)
Date: 03/30/00

I was discussing writing a page especially for testing, which simulated form submission
to the registration process. Rather than processing the POST input from the
registration form, it would have a loop on the page that generated some fixed number of
usernames, _as_if_ they had been submitted. So this isn't really a hacking issue, just
a load test - not a particularly good one, but useful for measuring _relative_
performance of different back ends.
GB

nicholas klem wrote:

> On Thu, 30 Mar 2000, Gary Bickford wrote:
> > I thought about this a little bit. I think one could fake the regsitration process
> > by making a loop around the database insertion code, generating random or
> > sequential usernames.
>
> uhm, I don't quite get what you mean. :-)
> If you use phplibs authentication classes you will have to generate both a
> $user_id ($u_id) and a $password to match it. If you can do that, then yes,
> we're hacked. If you manage to assign yourself with admin permissions we're
> dead. But that should be _very_ difficult AFAIK.
>
> nicholas
> nklem <email protected>
>
> >
> > nicholas klem wrote:
> >
> > > On Wed, 29 Mar 2000, Sascha Schumann wrote:
> > > > On Wed, Mar 29, 2000 at 07:13:23PM +0200, nicholas klem wrote:
> > > > > On Wed, 29 Mar 2000, you wrote:
> > > > > > > Yes, but how is this persistence implemented? Is there a
> > > > > > > mechanism for preserving these variables in server memory?
> > > > > >
> > > > > > Not in server memory. While server side session management
> > > > > > would be awesome, I don't know how feasible that would be.
> > > > > > As of right now, the only way I know of to keep persistant data
> > > > > > is through the use of client side cookies.
> > > > >
> > > > > I'm experimenting with phplib, and I strongly suspect that it is possible to
> > > > > configure the class sessions to store itself and children in some kind of
> > > > > shared machine-memory. The example configuration file comes like this:
> > > > >
> > > > > #class Example_CT_Shm extends CT_Shm {
> > > > > # var $max_sessions = 500; ## number of maximum sessions
> > > > > # var $shm_key = 0x123754; ## unique shm identifier
> > > > > # var $shm_size = 64000; ## size of segment
> > > > > #}
> > > >
> > > > As the author of ct_shm I strongly discourage people from running it
> > > > on production servers. The way shared memory is handled by the shared
> > > > memory module is far from being efficient. For example, if you store
> > > > 1000 variables and delete the first one, the module will copy 999 variables
> > > > including the variable data to avoid memory fragmentation.
> > > >
> > > Thanks! A good thing to know. Maybe we could balance the load between mysql and
> > > CT_Shm and see which breaks first? Anyone know of good ways to stress-test mysql
> > > and/or php? Could be fun. ;-)
> > >
> > > nicholas
> > > nklem <email protected>
> > > -
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> > --
> > "Cyber is cyber, life is life."
> > Gary E Bickford mailto:garyb <email protected>
> > FXT Corporation http://www.fxt.com/ tel:541-383-2749
> > mail:PO BOX 1808, SISTERS OR 97759 ship:66265 JERICHO ROAD, BEND OR 97701
> >
> >
> >
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--
                "Cyber is cyber, life is life."
Gary E Bickford         mailto:garyb <email protected>
FXT Corporation         http://www.fxt.com/     tel:541-383-2749
mail:PO BOX 1808, SISTERS OR 97759      ship:66265 JERICHO ROAD, BEND OR 97701

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