I've to agree. Seeing the software stack, I can definitely point to the
database as the most probable candidate for failure. I've been using and
managing Postgresql database for a little while (not as much as Oracle) and
I can definitely say that features available might not be a best fit for
applications like TSS.
My understanding is that if you have to use text search capability, you have
to probably use database specific functions and queries that might not be
available thru JDBC and that depending on versions of the JDBC driver (and
the database), your performance varies.
In addition, hearing from Howard's description of the backend schema
containing only a handful of tables, you're definitely going to run into
bottlenecks because there are only those handful of tables serving thousands
of users concurrently.
What seems strange is that the decision of using Postgresql (which does not
support clustering to load balance) as the backend to support a cluster of
app servers seems mysterious to me. Don't misunderstand me, I love
Postgresql, and I know its capabilities and limits. And I simply don't think
it is appropriate for this kind of loads. Anyway, just me 2 cents.
-----Original Message-----
From: Konstantin Ignatyev [mailto:[EMAIL PROTECTED]
Sent: Friday, September 23, 2005 10:44 AM
To: Tapestry users
Subject: Re: TheServerSide.com moving away from Tapestry?
http://www.theserverside.com/news/thread.tss?thread_id=36654#185568
That IMO says exactly (although indirectly) what does
not work and why TSS cannot tell directly what the
problem is.
--- Benjamin Tomasini <[EMAIL PROTECTED]>
wrote:
It *could* get really ugly. But from the tone of
the discussions, it
looks like the TSS folks are taking a very balanced
and honest approach.
There was one ad hominem post that just listed the
"culprits" without
any kind of logical support. Joseph seemed to take
care of that well.
The best way to answer any unfounded blame is to ask
for meaningful data
behind any presented analysis. If TSS keeps this
up, I think the
Tapestry community, and the Java community as a
whole will be served
well. I still have faith that the OSS community is
a mertiocracy, and
that over the long run, merit wins out over
marketing and FUD.
We'll see.
I did try to post something like this on TSS, but I
couldn't login. :)
Ben
Geoff Longman wrote:
I understand. It's just that nobody is standing up
for Tapestry and
you are the only one with enough information to do
that without
sounding like an idiot.
I realize there's a fine line to tread to avoid
things degenerating
into fingerpointing. But the way I see it, the
longer TechTarget is
in trouble the more likely it is that they will
start looking for
scapegoats. I'm sure the people in there are
working hard to solve the
problems. But what if another 3 weeks go by without
improvement? I
would expect at that point the insiders will go
into "save my butt"
mode and shift blame to anything and everything
they can to save thier
jobs.
I could get really ugly.
Geoff
On 9/23/05, Howard Lewis Ship <[EMAIL PROTECTED]>
wrote:
These posts about TSS are troubling.
The basic issue is that I signed on with The
Middleware Company to do
a number of phases of development of
TheServerSide.com. The first
phase was the basic translation of the site to a
component object
model, leaving all the functionality unchanged.
At the same time this was occuring, a seperate
team was converting the
backend access from entity EJBs to Solarmetric
Kodo.
In the end, I had less than a week to integrate
the two before going
live. And yet, for the most part, the result was
quite succesful.
However, with the acquisition of The Middleware
Company by Tech
Target, my involvement with TSS came to an end;
the later, more
interesting phases, where we simplified the stack
and built
considerable UI improvements, has not come to
pass. All I've seen is
the introduction of more and more ads on the site.
I can't talk to the root problem today; I don't
know it ... I do know
that Tapestry is doing exactly what its supposed
to be doing, that the
functionality problems (missing posts and such)
are a problem at the
application layer (the stateless session bean used
to manage
transactions) and the interaction between that
layer, Kodo, Coherence,
WebLogic and the database. In fact, given the
simplicity of the
database schema (just six or eight tables) I
suspect the problem
really is in the configuration and integration of
these elements.
Based on what I've read, and some high level
discussions I had with
them last winter, I believe TechTarget is building
a single enterprise
wide solution for all their many web sites.,
migrating away from the
Tcl-based Vignette solution used by the majority
of their sites, as
well as the Tapestry-based solution for TSS.com
and TSS.net. All I
know about the solution is that it will be based
on JEE (assuming that
hasn't changed since our discussions).
On 9/22/05, Matt Welch <[EMAIL PROTECTED]>
wrote:
http://www.theserverside.com/news/thread.tss?thread_id=36654
In the above referenced thread there is a
reference to the TSS having some
serious issues with the perfromance and UI of
their site and that they will
soon be moving to an all new codebase. Wasn't it
pretty recently that TSS
relaunched using Tapestry? Are they having
problems with it? I'd be curious
to find out as I'm considering using Tapestry on
a large scale product in
the not to distant future and wouldn't want to
come up against the same
problems.
--
Howard M. Lewis Ship
Independent J2EE / Open-Source Java Consultant
Creator, Jakarta Tapestry
Creator, Jakarta HiveMind
Professional Tapestry training, mentoring, support
and project work. http://howardlewisship.com
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Konstantin Ignatyev
PS: If this is a typical day on planet earth, humans will add fifteen
million tons of carbon to the atmosphere, destroy 115 square miles of
tropical rainforest, create seventy-two miles of desert, eliminate between
forty to one hundred species, erode seventy-one million tons of topsoil, add
2,700 tons of CFCs to the stratosphere, and increase their population by
263,000
Bowers, C.A. The Culture of Denial: Why the Environmental Movement Needs a
Strategy for Reforming Universities and Public Schools. New York: State
University of New York Press, 1997: (4) (5) (p.206)
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