Re: Dr. Miguel 'Optimistic Locking' Arroz [was Re: WebObjects stress Testing tool?]
Re: Dr. Miguel 'Optimistic Locking' Arroz [was Re: WebObjects stress Testing tool?]
- Subject: Re: Dr. Miguel 'Optimistic Locking' Arroz [was Re: WebObjects stress Testing tool?]
- From: Tim Worman <email@hidden>
- Date: Thu, 3 Dec 2009 15:39:16 -0800
I'm also staring down a future with MySQL - for a much different reason. Our school has a lot of institutional knowledge of FileMaker Pro. I'm moving towards WO as the editing mechanism and leveraging that institutional knowledge for users' report writing needs. FMP only supports 3 databases for transparently including external ODBC data sources - and MySQL is the only option for us.
Up to now I've been using OpenBase and been extremely pleased with it but FileMaker's got me by the short and curlies. I have been following Kieran's support of MySQL and I'm glad to see others see similar benefits.
Tim Worman
UCLA GSE&IS
On Dec 3, 2009, at 3:20 PM, Mike Schrag wrote:
> Also, full disclosure -- i DO use Postgresql and I think it's a great database, but I always feel a little queasy when I do a deployment with PG without clustering support. There's always the feeling of "i sure hope this doesn't screw me." FrontBase has clustering, but has an obnoxious bug with clustered sequences which basically requires that you use guid pks, which none of our stuff does, so it's pretty likely MySQL is in my future.
>
> ms
>
> On Dec 3, 2009, at 6:18 PM, Mike Schrag wrote:
>
>> Caveat here -- I don't use MySQL (yet) for anything real. InnoDB is acid, though. I agree that you should never run a myisam mysql for most normal systems and that it's strange that this is the default, but the fact is that you CAN set it to innodb, and it's a perfectly capable (if not VERY capable) database.
>>
>> Soooooo -- I'm calling this out as FUD. Search google for "postgresql corruption" and you'll get plenty of matches, too:
>> Results 1 - 10 of about 164,000 for postgresql corruption.
>> Results 1 - 10 of about 12,700 for mysql innodb corruption.
>>
>> There are quite a few huge systems that are running on MySQL. And the simple fact that you can cluster it actually makes it far more resilient than postgresql. Go try to setup a fault tolerant deployment of PG. Have fun and let me know when you're done.
>>
>> ms
>>
>> On Dec 3, 2009, at 6:10 PM, Miguel Arroz wrote:
>>
>>> Hi!
>>>
>>> There is nothing "specifically" wrong about using MySQL as a database for WO. What's wrong is using MySQL at all! ;)
>>>
>>> Essentially, it sucks. The first concern of MySQL authors is speed, and only then correctioness. This may be seen my the existence of InnoDB itself. First, speeeeeed. A few years later, yeah, this actually might be usable in something else than a blog if we actually add ACID properties to it!
>>>
>>> In my Univ, the IT team who deals with the central systems moved everything they could from mysql to PostgreSQL. Among other reasons, once in a while a MySQL table corrupted itself. PostgreSQL is much more robust.
>>>
>>> As always in software engineering, everything is a compromise. There may be a few situations where MySQL is dramatically faster than PostgreSQL, and the inverse is also true, it depends on the usage and the DB architecture. This to say that you should use what better suits your needs. But what I would not expect is MySQL to... you know... work! ;)
>>>
>>> Yours
>>>
>>> Miguel Arroz
>>>
>>> On 2009/12/03, at 22:58, Kieran Kelleher wrote:
>>>
>>>> Miguel, anyone, please enlighten me as to what specifically is wrong with using MySQL InnoDB as a database for WO because I have not seen any problem, but then I have not used PostgreSQL or FrontBase either - so maybe I don't see a problem that I should be concerned about.
>>>>
>>>> -Kieran
>>>>
>>>> On Dec 3, 2009, at 5:41 PM, Miguel Arroz wrote:
>>>>
>>>>> Hi!
>>>>>
>>>>> On 2009/12/03, at 22:32, Kieran Kelleher wrote:
>>>>>
>>>>>>>> I create new OSCs for most background tasks. The one thing is that I dispose() on it at the end of the task .... and the dispose() is only useful if you use ERXJDBCAdaptor is used since the regular WO 5.3 jdbc adaptor opens two connections for every OSC and leaves the stupid things open forever. ERXJDBCAdaptor only opens one db connection and releases it when u call dispose() IIRC.
>>>>>>>
>>>>>>> Dude! <http://terminalapp.net/webobjects-postgresql-and-db-growing-and-growing/> ;)
>>>>>>
>>>>>> Dude! www.mysql.com - innodb (or cluster NDB) .... doesn't "grow and grow" (and it is not a "toy", no matter what Chuck says ;-) )
>>>>>
>>>>> No, it's a disaster! ;)
>>>>>
>>>>> The "growing" is a side effect of leaving the transaction opening that happens on PostgreSQL due to its architecture, but the point is the same, do what I say there to avoid the dumb connection. :)
>>>>>
>>>>> Yours
>>>>>
>>>>> Miguel Arroz
>>>>>
>>>>
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