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http://www.mysqlperformanceblog.com/2009/08/27/looking-at-redis/
Interesting read, even though possibly biased

did you know? http://opensource.atlassian.com/projects/hibernate/browse/HHH-468. Note that this issue (like some of my favorite) is now open since 2005.

Hi
For my first post here, let me speak about this issue which bogged us down a few time ago :
InnoDB checks UNIQUE and FOREIGN KEY constraints row-by-row

It may sound trivial, but it means that unique and foreign key constraints aren’t transaction safe. But, when using some ORM like hibernate, it’s pretty easy and apparently [...]

if you ever come to the need to migrate Data from Postgres to MySQL, you should stay away from using dumps. It is a hell lot easier to use export/import to/from CSV Data, because you do not need to synchronize column-names and it is special-char-proof.
Postgres syntax for exporting:

COPY tablename [ ( column [, ...] ) [...]

Just a quick note about a problem i had to face few days ago. After updating a System from mm.mysql version 2.0.14 to the current Connector/J, i recognized
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As you might know already, Hibernate adds an important non-Spec Feature to the JPA:
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Had some fun with EJB3 Entity definitions today, that showed a pitfall of “Quick-and-easy-don’t-think-about” relationship definition.Situation is as follows:

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I had a little problem today using DELETE statement in MySQL. I wanted to delete those rows, unreferenced by another table. So what comes to ones mind is using a subselect like
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