Re: Connection Pooling, a year later

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От Don Baccus
Тема Re: Connection Pooling, a year later
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Msg-id 3C1F6DBF.2040000@pacifier.com
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Ответ на Re: Connection Pooling, a year later  (Bruce Momjian <pgman@candle.pha.pa.us>)
Ответы Re: Connection Pooling, a year later  (Oleg Bartunov <oleg@sai.msu.su>)
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Bruce Momjian wrote:


> Yes, that is assuming you are using PHP.  If you are using something
> else, you connection pooling in there too.  All those client interfaces
> reimplementing connection pooling seems like a waste to me.


Effective pooling's pretty specific to your environment, though, so any 
general mechanism would have to provide a wide-ranging suite of 
parameters governing the number to pool, how long each handle should 
live, what to do if a handle's released by a client while in the midst 
of a transaction (AOLserver rolls back the transaction, other clients 
might want to do something else, i.e. fire a callback or the like), etc etc.

I think it would be fairly complex and for those high-throughput 
applications already written with client-side pooling no improvement.

And those are the only applications that need it.

-- 
Don Baccus
Portland, OR
http://donb.photo.net, http://birdnotes.net, http://openacs.org



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