Nach 2 Wochen arbeiten mit CakePHP hier eine kurze Bilanz. Im Grossen und Ganzen versucht CakePHP die Ideen und Konzepte von Rails zu übernehmen, was auch in vielen Teilen des Frameworks gelingt.
Der grösste Kompromiss den CakePHP einging, ist auf PHP4 statt gleich auf PHP5 zu setzten. Dies hat leider weitreichende Konsequenzen:
Das beginnt schont bei ganz einfachen Sachen, wie etwa dass CakePHP kein Exception Handling kennt. Stattdessen werden E_USER_WARININGs und dergleichen ausgelöst.
Der grösste Unterschied zu Rails besteht jedoch in der Implementierung von ActiveReocrd. Das AR-Objekt wird in erster Linie als SQL Generator eingesetzt, die 'find' und 'read' Mehtoden geben keine Objekte zurück, sondern tief verschachtelte Arrays. Die Implementierung von CakePHP erinnert daher mehr an ein Table Data Gateway Pattern. Auch in CakePHP kennt Active Record die bekannten Callbacks wie 'beforeSave', aber auch hier wird mit Arrays gearbeitet, nicht mit Objekten.
Eine weitere Konsequenz daraus ist das CakePHP kein Single Table Inheritance oder deren polymorphe Variante kennt.
Zusammendfassend lässt sich aus meinen ersten Erfahrungen sagen, dass das Erarbeiten von Business Domain Objects in CakePHP wesentlich schwieriger fällt als in Rails. Das Active Record von CakePHP ist darauf ausgerichtet aus der Datenbank zu lesen und schreiben und die gewonnen Daten gleich auszugeben. Die Business Logik sollte gemäss dem Motto 'fat model, skinny controller' in die Model-Objekte abwandern, dies ist aber genau die Schwierigkeit, wenn diese mehrheitlich nur als Arrays daher kommen.
Trotzdem ist CakePHP eine gute Alternative, wenn man an PHP gebunden ist (oder wird). Zudem bieten heute alle Provider PHP, wer für ein einfaches Projekt einen billigen Host braucht ist CakePHP sicherlich eine Option. Für komplexere Projekte lohnt sich Ruby zu erlernen und auf ein durchgehend objekt-orientiertes Framework wie Rails zu setzten.
Posts mit dem Label CakePHP werden angezeigt. Alle Posts anzeigen
Posts mit dem Label CakePHP werden angezeigt. Alle Posts anzeigen
Freitag, 6. Februar 2009
Donnerstag, 15. Januar 2009
Small Performance Test Rails vs. CakePHP
At my company we're currently evaluating a Web-Framework. Today we had a look at CakePHP and got some simple tutorial examples running. Because CakePHP is very close to Rails, I wrote one example also in Rails to see differences.
Just to get an impression about the performance of the two frameworks, I run ApacheBench to get some benchmarks.
As one Mongrel can only handle one request at the time, I fired 50 requests in a row.
Here finally the results (see full reports below):
Also the other known PHP Frameworks CodeIgniter and Symfony are not that different, CakePHP lies somewhere between them.
On the other hand Ruby really was designed as a pure OO language and it seems that this turns to be an advantage when building frameworks, also from a performance perspective.
The full results:
Just to get an impression about the performance of the two frameworks, I run ApacheBench to get some benchmarks.
But first things first, here some figures about the test environement:
- iMac OS X 10.5.6, 2 GHz PowerPC G5, 1 GB RAM
- PHP 5.2.6
- CakePHP 1.2.0.7962
- Ruby 1.8.6
- Rails 2.2.2
- MySQL 5.0.67
function index(){
$jobs = $this->Job->find('all');
$this->set('jobs', $jobs);
}
I put only 3 rows in the database table, so that reading from it takes virtually no time and we can better see the time consumed by the framework itself.As one Mongrel can only handle one request at the time, I fired 50 requests in a row.
ab -n 50 -c 1 http://127.0.0.1:3000/jobsLast thing I made, was a very small and straight forward PHP script, that does the same job. This way I had a benchmark of a script using only plain vanilla PHP with no framework overhead.
Here finally the results (see full reports below):
CakePHP Time per request: 365.572 [ms] (mean) Rails (RAILS_ENV=development) Time per request: 105.029 [ms] (mean) Rails (RAILS_ENV=production) Time per request: 30.318 [ms] (mean) Pure PHP Time per request: 9.026 [ms] (mean)Honestly I was quite surprised. There's so much talk about Ruby being slow, which is surely true when compared to Java. Also PHP is faster in microbenchmarks. But it seems to me that PHP is only really fast when used as much as possible straight forward, this is what PHP was designed for. When it comes to build frameworks and OOP there're better tools.
Also the other known PHP Frameworks CodeIgniter and Symfony are not that different, CakePHP lies somewhere between them.
On the other hand Ruby really was designed as a pure OO language and it seems that this turns to be an advantage when building frameworks, also from a performance perspective.
The full results:
Rails (RAILS_ENV=development)
=============================
ab -n 50 -c 1 http://127.0.0.1:3000/jobs
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking 127.0.0.1 (be patient).....done
Server Software: Mongrel
Server Hostname: 127.0.0.1
Server Port: 3000
Document Path: /jobs
Document Length: 3043 bytes
Concurrency Level: 1
Time taken for tests: 5.251 seconds
Complete requests: 50
Failed requests: 0
Write errors: 0
Total transferred: 178251 bytes
HTML transferred: 152150 bytes
Requests per second: 9.52 [#/sec] (mean)
Time per request: 105.029 [ms] (mean)
Time per request: 105.029 [ms] (mean, across all concurrent requests)
Transfer rate: 33.15 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.8 0 6
Processing: 74 105 64.5 83 318
Waiting: 73 103 63.6 83 317
Total: 74 105 64.7 84 318
Percentage of the requests served within a certain time (ms)
50% 84
66% 86
75% 88
80% 91
90% 237
95% 304
98% 318
99% 318
100% 318 (longest request)
RAILS (RAILS_ENV=production)
============================
ab -n 50 -c 1 http://127.0.0.1:3000/jobs
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking 127.0.0.1 (be patient).....done
Server Software: Mongrel
Server Hostname: 127.0.0.1
Server Port: 3000
Document Path: /jobs
Document Length: 3043 bytes
Concurrency Level: 1
Time taken for tests: 1.516 seconds
Complete requests: 50
Failed requests: 0
Write errors: 0
Total transferred: 178236 bytes
HTML transferred: 152150 bytes
Requests per second: 32.98 [#/sec] (mean)
Time per request: 30.318 [ms] (mean)
Time per request: 30.318 [ms] (mean, across all concurrent requests)
Transfer rate: 114.82 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.3 0 3
Processing: 17 30 32.8 21 187
Waiting: 16 29 32.8 20 186
Total: 17 30 32.8 21 187
Percentage of the requests served within a certain time (ms)
50% 21
66% 24
75% 25
80% 26
90% 34
95% 138
98% 187
99% 187
100% 187 (longest request)
CAKEPHP
=======
ab -n 50 -c 1 http://jobscake/jobs
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking jobscake (be patient).....done
Server Software: Apache/2.2.9
Server Hostname: jobscake
Server Port: 80
Document Path: /jobs
Document Length: 4176 bytes
Concurrency Level: 1
Time taken for tests: 18.279 seconds
Complete requests: 50
Failed requests: 49
(Connect: 0, Receive: 0, Length: 49, Exceptions: 0)
Write errors: 0
Total transferred: 217781 bytes
HTML transferred: 200781 bytes
Requests per second: 2.74 [#/sec] (mean)
Time per request: 365.572 [ms] (mean)
Time per request: 365.572 [ms] (mean, across all concurrent requests)
Transfer rate: 11.64 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.4 0 3
Processing: 329 365 42.2 355 570
Waiting: 329 364 39.6 355 543
Total: 329 365 42.4 356 572
Percentage of the requests served within a certain time (ms)
50% 356
66% 364
75% 372
80% 374
90% 390
95% 409
98% 572
99% 572
100% 572 (longest request)
PURE PHP
========
ab -n 50 -c 1 http://localhost/develop/projects/Test/pure_php_jobs/
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking localhost (be patient).....done
Server Software: Apache/2.2.9
Server Hostname: localhost
Server Port: 80
Document Path: /develop/projects/Test/pure_php_jobs/
Document Length: 1923 bytes
Concurrency Level: 1
Time taken for tests: 0.451 seconds
Complete requests: 50
Failed requests: 0
Write errors: 0
Total transferred: 107200 bytes
HTML transferred: 96150 bytes
Requests per second: 110.80 [#/sec] (mean)
Time per request: 9.026 [ms] (mean)
Time per request: 9.026 [ms] (mean, across all concurrent requests)
Transfer rate: 231.98 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 0 0.2 0 1
Processing: 5 9 7.3 6 53
Waiting: 3 7 7.7 5 53
Total: 5 9 7.3 6 53
Percentage of the requests served within a certain time (ms)
50% 6
66% 8
75% 10
80% 12
90% 13
95% 16
98% 53
99% 53
100% 53 (longest request)
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