Comments on: Building high-loaded portal – InnoDB vs MyISAM

By: Alexandru Georoceanu

Alexandru Georoceanu — Wed, 31 Mar 2010 09:37:01 +0000

A solution for your search, instead of sphinx, would be Lucene.
You can either use the Java (faster, better, newer, maybe a bit harder to implement) version ( http://lucene.apache.org/java/docs/ ), or you can use the Zend’s port to PHP version Lucene ( http://framework.zend.com/manual/en/zend.search.lucene.html ) included in the Zend Framework.

Good luck

By: Konstantin Mirin

Konstantin Mirin — Fri, 02 Oct 2009 04:20:58 +0000

Yes, you’re right.
InnoDB is better for the high-loaded system because it can recover from crashes and, by the way, it is better than MySIAM even for high reding volumes, see the mysqlperformaceblog (http://www.mysqlperformanceblog.com/2007/01/08/innodb-vs-myisam-vs-falcon-benchmarks-part-1/)
InnoDB beats MyISAM almost everywhere

By: Igor

Igor — Mon, 28 Sep 2009 17:41:37 +0000

myisam is better for high read volumes, innodb for high update volumes due to table vs. row locking.

innodb is journaled, and can recover from crashes where myisam can’t, much like NTFS vs. FAT file systems.

myisam has full-text indexing, innodb doesn’t.

innodb has transaction support, commits and rollbacks, myisam lacks these.

By: Konstantin Mirin

Konstantin Mirin — Tue, 26 May 2009 05:24:52 +0000

Thanks for commenting! It actually doesn’t matter cause I can translate your comments if I see them interesting Keep reading my blog and feel free about commenting.
Regarding your comment, yes I also use these things. I like setting initial values the beforeValidate (if that’s user ID or other data needed for validation) or beforeSave methods. It’s very convenient to put data integrity tasks to the model instead of controller.

By: jz

jz — Tue, 26 May 2009 00:52:12 +0000

In Russian:
Ограничения внешних ключей бывают очень полезны, если в проекте используется доступ к данным из различных скриптов (PHP, Python, etc.) Тогда не надо задумываться, что и где удалять. А в Yii есть прекрасная возможность задавать свои обработчики событий в модели данных. Например, у меня так удаляются связанные с позицией каталога файлы.

P.S. Понимаю по-английски, но плохо на нём говорю и поэтому пишу по русски. Дай знать, если так поступать не стоит и лучше пытаться высказывать мысль на плохом английском)
——
English translation by Konstantin:
Foreign key restrictions may be very useful if you have several methods to access at in you project (from PHP, Python etc). If you have this, you don’t need to think what delete and where. [I guess, he means cascade delete]. And in Yii there is an excellent feature – set event handlers in the data model. For example, I delete product files when item is removed from the catalogue using this technique.
P.S. I understand English, but I don’t know it good enough to express my thoughts correctly. Let me know if I should rather use bad English instead of good Russian.

By: Konstantin Mirin

Konstantin Mirin — Thu, 21 May 2009 14:42:15 +0000

Yes, I googled for the phrase, but didn’t find good results, so I asked about it.
Sure I know about foreign key constraints. That’s an excellent thing, but I didn’t use cascade deleting, I delete them manually because there should be other things to be done with deleting
However, this feature is really nice.

I knew about constraints, but main advantage for me was the speed for SELECT queries and row-level lock instead of table-level in MyISAM. That’s more important for the portal

By: Jonah

Jonah — Thu, 21 May 2009 14:15:26 +0000

I like foreign key constraints. It keeps the integrity of the database and allows for things such as collapsing (like if one row is deleted, all it’s foreign rows can be configured to automatically be deleted). InnoDB has this but not MyISAM. It can be Googled.

By: Konstantin Mirin

Konstantin Mirin — Wed, 20 May 2009 19:59:12 +0000

Do you mean that’s good for you or bad? Sorry, English is not the native language for me…

By: Jonah

Jonah — Wed, 20 May 2009 19:56:36 +0000

InnoDB has foreign constraints, MyISAM does not. That’s the breaker for me