--- Perrin Harkins <[EMAIL PROTECTED]> wrote: > Date: Wed, 30 Oct 2002 14:50:50 -0500 > From: Perrin Harkins <[EMAIL PROTECTED]> > To: Mithun Bhattacharya <[EMAIL PROTECTED]> > CC: [EMAIL PROTECTED] > Subject: Re: Yahoo is moving to PHP ?? > > Mithun Bhattacharya wrote: > > >No it is not being removed but this could have been a very big thing > >for mod_perl. Can someone find out more details as to why PHP was > >preferred over mod_perl it cant be just on a whim. > > > > Think about what they are using it for. Yahoo is the most extreme > example of a performance-driven situation. They have so much volume > that they are willing to write things in C++ just to get the speed > that > is required. They pre-process and cache things as much as they > possibly > can. The server-side scripting language they use is basically a > glorified include processor. They pull in pre-built include files > and > read things out of dbms with it. That's all. The real application > stuff is built in other languages. (At least this is the impression > I > get from the paper and from talking to people there.) > > Given that, PHP is a reasonable fit. It's fast, has a less flexible > syntax, and uses less memory than mod_perl. They also have more of a > > need than most people to integrate with C/C++, and I've been told > that > it's easier to hack those into PHP. > > Think about the implications of the memory graph. If they can run 5 > more apache children at once on PHP because of its lower memory > consumption, 5 * 4500 = 22500 more users they can handle at any given > > moment! > > >Also how does one go about justifying the fact that Ioncube cache is > >doing a better cacheing than any mod_perl based solution ?? > > > > Sorry, I read that wrong. It was actually mod_perl that had the best > > performance. The cache they use works just the same as Perl's normal > > operation, i.e. once some code is compiled it stays in memory and > doesn't need to be compiled again. You don't have to do anything to > get > that in Perl. > > - Perrin >
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