Hi there, On Fri, 7 Mar 2003, Michael Hyman wrote:
> I am not familiar with clustering.... > > Would you run a mod_perl based web site on a cluster? If the performance and the money for the hardware are issues then perhaps before you buy you should spend some time looking into things like alternative system architectures, software packages, development methods, timescales and *those* costs... There's a lot more to it than "what's the fastest machine". Apache isn't the fastest Web server on the planet and coding it in Perl isn't the fastest way of implementing an algorithm. Asking for data from Oracle won't usually be the fastest way to get hold of it - especially if the machine running Oracle is remote. On the same hardware, you might get ten times the performance from a well-tuned proxy server setup than you can from a single mod_perl server. And you might not. Put all those things into a system and the difference between Solaris and Linux or between PC and Sparc may well be lost in the noise. And if you don't have a pretty good idea of where you're going with it all before you set out, then you might not get there. Have you any metrics for the kinds of loads you expect to meet, and the parts of the system which will use most resources to sustain them? Do you know what performance you can expect from the database under the expected load conditions? Is any of this under your control? 73, Ged.
