On Sunday, 12 December 2010, Tommy Pham <tommy...@gmail.com> wrote: >> -----Original Message----- >> From: Peter Lind [mailto:peter.e.l...@gmail.com] >> Sent: Sunday, December 12, 2010 1:18 AM >> To: Tommy Pham >> Cc: php-general List >> Subject: Re: [PHP] ORM doctrine >> >> > I understand cache well, both the benefits (save DB trip) and >> > shortfalls (outdated by DB, management, etc.). Most of the apps that >> > I've seen so far used cache to solve a problem that shouldn't happen >> > in the 1st place. For example, during recent my quest looking PHP MVC >> > framework and sample apps, I saw OpenCart, an e-commerce app based >> on >> > custom MVC framework. Installed it for a test run. It looks good and >> > seems to perform well with the included sample data. Then I filled up >> > some more sample data: over 3000 categories, over 2000 manufacturers, >> > over 300,000 products. No other changes made such specials, features, >> > etc. Although the app supports i18n, the sample data is just one >> > language for a decent DB size of about 100MB. The app took over 30 >> > seconds to respond for any link. Then I disable the cache and began >> > debugging. I made 1 minor addition to the DB and 1 minor change in >> > the code base - parts on 1 line - I shorten the response time by about >> > 10 seconds. What I just did proved my 2nd and 3rd point :) >> > >> > Regards, >> > Tommy >> > >> >> An app that takes 30 secs to respond using cache is doing it wrong. >> You shaving 10 secs off the request without cache is fine but you should >> have brought it much further down with a cache. Waiting 20 secs for the >> response is still useless. >> >> Regards >> Peter >> >> -- >> <hype> >> WWW: plphp.dk / plind.dk >> LinkedIn: plind >> BeWelcome/Couchsurfing: Fake51 >> Twitter: kafe15 >> </hype> > > My goal wasn't to optimize any app. I just want to learn 'implement abstract > MVC concept into concrete, ...' as I mentioned in Adam's thread about > choosing framework or not. If I was to optimize it, I wouldn't have any > problems lowering the response time down to under 3 seconds w/o cache. > > Regards, > Tommy >
Your posts seem to indicate that caches are only useful when other parts of the app have been done wrong. My point was that this is a fairly fundamental misunderstanding of caches - regardless of what you are or aren't capable of optimizing. Regards Peter -- <hype> WWW: plphp.dk / plind.dk LinkedIn: plind BeWelcome/Couchsurfing: Fake51 Twitter: kafe15 </hype> -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
