Re: [Quickfix-developers] QuickFIX store and log DB down

[Djalma R. d. S. F. <drs...@gm...>]

Hi Benny,

Following is my opinion:

I don't believe that the logging unavailability should be a reason to
reject a message, although this is a problem that I would like to be
able to detect and correct it at my side asap.

Anyway, some weeks ago when I was debugging a specific application
error, I also found that the errors in underlying database are simply
hidden from the application, like for example undesired schema
modifications, connection failures etc.

I thought about an alert mechanism for monitoring, some kind of
callback function or an external file to log errors in logging class
(MySQLLog e.g.). This way, it would become easier to detect errors and
have a recovery mechanism in the application for logging and store.

Following was the issue I opened with a feature request.
http://www.quickfixengine.org/bugtracker/bug.php?op=show&bugid=255

I figure out that the problem is worse if the Store is down,
SendToTarget will return false, although the message might have been
sent.  But, with no warranty at all, since retransmission won't be
possible in this situation.

I belive that currently QF has a very optimistic aproach for the
problems we're concerned about.

Djalma

On 6/20/07, bennyzlm <ben...@ho...> wrote:
> QuickFIX Documentation: http://www.quickfixengine.org/quickfix/doc/html/index.html
> QuickFIX Support: http://www.quickfixengine.org/services.html
>
>
> Hi,
>
> Currently I am focusing on recovery if some component in the system down.
> More specificly, if I use MySQL to be the store and log destination for
> quickfix, what will the quickfix engine response to the messaged received
> during MySQL is down? I did some experiments and it seems quickfix throws
> some SQL exception but do not response any reject message. Is there any way
> in quickfix to response the other side that it is down, or reject to any
> action taken by the other side? Thanks for any help!
>
> Regards,
> Benny
> --
> View this message in context: http://www.nabble.com/QuickFIX-store-and-log-DB-down-tf3950636.html#a11208236
> Sent from the QuickFIX - Dev mailing list archive at Nabble.com.
>
>
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