Hi Ananth,
Ananth wrote:
> QuickFIX Documentation:
> http://www.quickfixengine.org/quickfix/doc/html/index.html QuickFIX
> Support: http://www.quickfixengine.org/services.html
>
> Hi,
>
>
>
> I have question regarding setting of seqnos...
>
>
>
> We have an application by which a trader can login from any computer.
>
> But as per settings we are storing seqnos in file in particular computer.
>
> So whenever client logins in another computer I just extract expected
> seq no. from logout message sent by Server, and overwrite *outgoing
> seqno* in respective file.
>
>
>
> But my problem arises with *incoming seqno*. Because when the server
> appln send next msg with its seqno, *ResendRequest* msg is generated
> by client appln, normally sequence reset msg is sent by server, but at
> times when seqno. gap is too high then it sends logout msg....In this
> situation I cant overwrite incoming seqno, because it would have many
> bad impacts in appln itself.
>
>
>
> How to handle this situation.
>
> Pls give me some suggestion in this matter
>
One suggestion that may be obvious, but peopole often miss the obvious
so I'll make it anyway: Share the store directory between
workstations. The downside is you may take a performance hit, and there
may be reliability issues due to single-point-of-failure and the latency
in writing to the store. But if you consider these factors and find the
tolerable this is by-far the easiest approach.
If sharing the flat files doesn't meet you needs, consider using MySQL
or some other database to store the files on a server. You still risk a
perfomance hit, but the reliability issue should ber handled by the
database.
One reason I think you may not be concerned about reliability is the
technique you are using now is very risky. Do you have any mechanism to
insure that a trader doesn't log onto two workstations at the same
time? If a trader walks away from a running workstation, and logs into
another there are a variety of things that could go wrong (and very few
that could go right!)
Dale
>
>
>
>
> Thanks in Advance,
> Ananth
>
>
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--
-----------------------------------------------------
Dale Wilson, Senior Software Engineer
Object Computing, Inc. (OCI)
http://www.ociweb.com/ http://www.theaceorb.com/
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