[Twisted-Python] adbapi MySQL read/write splitting

[Jason J. W. Williams]

Hey Alvin,

Thank you for the info. Any idea what kind of changes they had to make
to the MySQLdb wrapper for adbapi to like it?

-J

On Tue, Aug 31, 2010 at 9:13 PM, Alvin Delagon <adelagon at gmail.com> wrote:
> Used to wrap MySQLdb for something like except that I did it for sharding.
> It worked well on distributing load across multiple database servers. I
> think the guys from my former company updated the wrapper to use adbapi.
> - Alvin
>
> On Wed, Sep 1, 2010 at 10:54 AM, Jason J. W. Williams
> <jasonjwwilliams at gmail.com> wrote:
>>
>> That's one way of handling it. Another way is to wrap the library so
>> it does the splitting automatically. The advantage to the latter is
>> not making mistakes where you accidentally use the READ connection for
>> a write. For non-async Python there are some tools like SQL Relay
>> which will do this for you, but you have to setup SQL Relay servers
>> and use the SQL Relay dbapi driver. MySQL Proxy will also do it, but
>> it's not very stable.
>>
>> I was somewhat hoping someone had already written a wrapper for doing
>> the splitting. Which brings me to a related question...if I were to
>> write a wrapper to do the splitting, would wrapping MySQLdb be
>> sufficient? Or would wrapping adbapi be the better path?
>>
>> -J
>>
>> On Tue, Aug 31, 2010 at 8:40 PM, Itamar Turner-Trauring
>> <itamar at itamarst.org> wrote:
>> > On Tue, 2010-08-31 at 20:36 -0600, Jason J. W. Williams wrote:
>> >> Sending writes (e.g. INSERTs and UPDATEs) to a master MySQL server and
>> >> reads (SELECTs) to a slave.
>> >
>> > So... two adbapi.ConnectionPool instances, one for the server, one for
>> > the slave?
>> >
>> >
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