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import-bot (20212) [Avatar] Offline
#1
[Originally posted by kforbes]

First of all, I wanted to say that I love the book. The best thing Sybase
could do to promote PB internet applications, would be to get this book in the
hands of as many developers as possible.

I'm sure that the first question that a client would have when you propose
using PB to develop their website, is how scalable this solution is and how
many simultaneous users it is capable of. I realize that a lot of the answer
depends on the hardware they are using, but assume the best possible hardware
configuration with massive memory, a big pipe, a well designed distributed
app, and well designed database.

In other words, could you build a website that handles as many transactions as
an Amazon.com? Are there any high transaction e-commerce sites that anyone is
aware of that have been built with PB? If not what's the best guess on the
maximum simultaneous users? What component would be most likely to cause a
bottleneck?
import-bot (20212) [Avatar] Offline
#2
Re: How robust a solution is PB for e-commerce?
[Originally posted by ezad1]

> First of all, I wanted to say that I love the book. The best thing Sybase
> could do to promote PB internet applications, would be to get this book in the
> hands of as many developers as possible.

Thanks.

> I'm sure that the first question that a client would have when you propose
> using PB to develop their website, is how scalable this solution is and how
> many simultaneous users it is capable of. I realize that a lot of the answer
> depends on the hardware they are using, but assume the best possible hardware
> configuration with massive memory, a big pipe, a well designed distributed
> app, and well designed database.
>
> In other words, could you build a website that handles as many transactions as
> an Amazon.com?

No.

> Are there any high transaction e-commerce sites that anyone is
> aware of that have been built with PB?

I don't know of any. Los Alamos National Lab had a demo at the '97 users
conference in Nashville, but that was neither high transaction nor e-commerce.

> If not what's the best guess on the
> maximum simultaneous users?

What's your definition of a simultaneous user. I like to think in terms of
simultaneous transactions, that is, the number of remote objects executing at
one time. My rule of thumb is no more than 10 simultaneous transactions. I've
simulated loads up to 75 simultaneous trans but it is unstable. Now 10
simultaneous transactions might translate to 100's of users per hour. I wish
others would also comment here.

> What component would be most likely to cause a
> bottleneck?

Memory. The more RAM, the better.