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subscription not expired but mirror gone?

 
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loupiote
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PostPosted: Mon Oct 07, 2013 9:07 pm    Post subject: subscription not expired but mirror gone? Reply with quote
The Mirror tab indicates:
"Your Gixen mirror subscription is good until Sat, Nov 2, 2013"

but it lists no item. is that a known bug?

my ebay username is "tristan-sf".
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loupiote
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PostPosted: Mon Oct 07, 2013 9:12 pm    Post subject: Reply with quote
ah, please disregard. i found this:

"Are they group snipes? Group snipes are not copied over to mirror, only single snipes."

all my snipes are group snipes... that would explain?

just curious: why are group snipes not copied to the mirror?
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Cupid



Joined: 09 Aug 2007
Posts: 7970
Location: Bristol, UK
PostPosted: Tue Oct 08, 2013 1:07 am    Post subject: Reply with quote
loupiote,

They are not copied to the Mirror because the process that cancels later snipes, when you win one, must be independent on any particular server... but if the Mirror won a Group item the Main would also need the later snipes cancelled... the process would not be independent, thus it is best to avoid the issue and have group snipes only execute on one server.

By definition a normal Group each snipe is replaceable with any other, you only want to win one... so the added reliability of having the Mirror backup is not as essential.
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loupiote
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PostPosted: Wed Oct 09, 2013 10:56 am    Post subject: Reply with quote
Cupid wrote:
loupiote,

They are not copied to the Mirror because the process that cancels later snipes, when you win one, must be independent on any particular server... but if the Mirror won a Group item the Main would also need the later snipes cancelled... the process would not be independent, thus it is best to avoid the issue and have group snipes only execute on one server.


pk, i understand, but there could still be some communication between the two servers for cancelling the other bids of a group after one has been won by one of the servers. this would be technically doable, if you wanted to do it (but it would require some work).
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PostPosted: Wed Oct 09, 2013 10:56 am    Post subject:
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Cupid



Joined: 09 Aug 2007
Posts: 7970
Location: Bristol, UK
PostPosted: Wed Oct 09, 2013 3:09 pm    Post subject: Reply with quote
My point is that it is possible, yes.. but it makes the two servers dependant upon each other to provide the full service... this would not be desirable for the service as a whole which has been specifically designed so that the servers operate, as far as possible, independently of one another in order to provide a more reliable service overall.

So we should not want to do it, because we should want to have as reliable a sniping service as possible.
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