On 6/11/07 1:32 PM, "Chris Shiflett" <[EMAIL PROTECTED]> wrote:
> Cliff Hirsch wrote: >>> 1. Why is there any duplicate processing? >> >> A Form submission would start by running the front-end controller, >> which loads a whole lot of classes, checks authentication, >> establishes the DB connection, inits sessions, sets up the template >> controller, and other housekeeping chores. > > This sounds like an argument against using a framework. :-) True. A trivial script becomes a simple dispatcher becomes a front-end controller becomes a Framework, becomes...before you know it...ASP.NET?! > Jesting aside, if you accept this overhead for every request, why would > it suddenly be unacceptable for a request to process a form? Excellent point. > You incur this overhead twice, but if adding a request / response > transaction noticeably degrades the performance of your web site, I > would speculate that your problems have little to nothing to do with > whether you use this particular technique. Good point. I'm sure other bottlenecks will arise long before this. >>> 2. What is the basis of your concern regarding session overhead? >>> You can persist data in cookies, if it's really a concern. >> >> This probably dates back to a presentation at the Zend conference >> several years ago given by Joyce from Renkoo regarding the evils of >> sessions. > > She might have been speaking about scalability. As your userbase > increases, server-side session data stores become increasingly difficult > to scale, although solutions like memcache make this problem manageable > for lots of really popular sites. Exactly. I've been designer for millions of users before I have even one. Talk about putting the cart before the horse.... > By the way, since writing the article, this technique has been described > as a design pattern called PRG (POST, Request, GET). Makes sense -- its all starting to make sense, albeit slowly... Chris, as always you are a wealth of knowledge. Thanks, Cliff _______________________________________________ New York PHP Community Talk Mailing List http://lists.nyphp.org/mailman/listinfo/talk NYPHPCon 2006 Presentations Online http://www.nyphpcon.com Show Your Participation in New York PHP http://www.nyphp.org/show_participation.php
