Scaling PHP Book: I will teach you to scale PHP to millions of users • Hacker News Board

Re: Scaling PHP Book: I will teach you to scale PHP to millions of users

#101

Post by riledhel » Wed, Jun 06, 2012, 2:55 PM UTC

Loic wrote: post #94

boyter wrote: post #86

Earlier quoted context omitted.

Wouldn't you lose one of the advantages of PHP which is that every request is stateless and that when it fails it doesn't fail hard killing the application?

Not any more nowadays. I am the original author of Photon and today PHP is extremely robust and you can catch all the exceptions/errors (outside the ones which are making your code invalid, but hey, do your homework). The current PHP 5.3 is also wonderful at not leaking memory. So you get the speed of bare PHP with a framework (because nothing is reloaded, the framework can really load once, reuse many times). On a s…

Current PHP is 5.4. Did you perform any test or benchmark with the new version? Do you gain anything from it? By the way, your project looks very interesting!

Re: Scaling PHP Book: I will teach you to scale PHP to millions of users

#102

Post by phaemon » Wed, Jun 06, 2012, 4:16 PM UTC

jameswyse wrote: post #85

Seems your site doesn't scale very well.. 404 Not Found Code: NoSuchBucket Message: The specified bucket does not exist BucketName: www.scalingphpbook.com RequestId: 403C0590E064E19F HostId: a+UggS1lMBgPJrT5X/kbdzsRK1kx+iKBQw6u4dZxieNkspwHbLZBWzXMa9CiHEAu

404 errors are not due to lack of scaling. I can't think of a case where you'd get that.

Scaling problems will usually return 5xx errors, most commonly 502, 503 and 504.

Re: Scaling PHP Book: I will teach you to scale PHP to millions of users

#103

Post by jameswyse » Thu, Jun 07, 2012, 4:33 AM UTC

phaemon wrote: post #102

jameswyse wrote: post #85

Seems your site doesn't scale very well.. 404 Not Found Code: NoSuchBucket Message: The specified bucket does not exist BucketName: www.scalingphpbook.com RequestId: 403C0590E064E19F HostId: a+UggS1lMBgPJrT5X/kbdzsRK1kx+iKBQw6u4dZxieNkspwHbLZBWzXMa9CiHEAu

404 errors are not due to lack of scaling. I can't think of a case where you'd get that. Scaling problems will usually return 5xx errors, most commonly 502, 503 and 504.

It was a joke :p

Re: Scaling PHP Book: I will teach you to scale PHP to millions of users

#104

Post by FuzzyDunlop » Fri, Jun 08, 2012, 10:40 PM UTC

dools wrote: post #82

FuzzyDunlop wrote: post #77

Earlier quoted context omitted.

It could be as simple as the performance loss incurred by an ORM is greater than the benefit of using it. You have PDO with PHP, which can be used quite adequately as an ORM itself (you can fetch a tailored SQL query into a class as opposed to working with basic arrays). I'd argue that, in some cases, an ORM is only used as a reaction to the separation of concerns. Writing SQL mixes up your languages, so why not try…

PDO doesn't handle mapping of nested relationships, though which is where it falls down when compared to ActiveRecord implementations. For example I want to fetch an author and all of the author's books in a single query then loop over and print out author name, and each book. A standard ActiveRecord ORM will give you an array of authors where each author contains an array of books, where as with PDO you're still lef…

Forgive me if I misunderstand, but if you can't pull this off in a single SQL query, then ActiveRecord can't either. It just hides the fact it's performing several queries to get what you want.

Re: Scaling PHP Book: I will teach you to scale PHP to millions of users

#105

Post by Loic » Mon, Jun 18, 2012, 1:52 PM UTC

riledhel wrote: post #101

Loic wrote: post #94

Earlier quoted context omitted.

Not any more nowadays. I am the original author of Photon and today PHP is extremely robust and you can catch all the exceptions/errors (outside the ones which are making your code invalid, but hey, do your homework). The current PHP 5.3 is also wonderful at not leaking memory. So you get the speed of bare PHP with a framework (because nothing is reloaded, the framework can really load once, reuse many times). On a s…

Current PHP is 5.4. Did you perform any test or benchmark with the new version? Do you gain anything from it? By the way, your project looks very interesting!

Very limited tests, one PECL extension for my projects was updated to support 5.4 only recently. The biggest win will most likely be for the POST payload (multipart) parsing because 5.4 is faster on array/strings. The good point is that with PHP farm, you can run both 5.3 and 5.4 in parallel to compare :)