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Suggestions and Ideas
Posted: Mon Nov 07, 2011 7:22 am
AuctionBytes just published the story about the issue.
Posted: Mon Nov 07, 2011 5:36 am
An update: since the workaround has been applied, the issue has almost disappeared. I can still see a few missed auctions from time to time, but it's fairly infrequent.
Posted: Mon Nov 07, 2011 3:04 am
Post subject: eBay DST problems and missed snipes
Starting yesterday after daylight savings time switch, users started seeing missed snipes. The problem was not consistent, it seems that snipes affected were completely random.
Further investigation revealed that time on ebay listings is randomly displayed incorrectly, by being one hour late. Since sniping services work by scraping pages, when such an incorrect time is picked up, this results in a missed snipe.
The problem is still ongoing. If you refresh an ebay listing page sufficiently many times, you will sooner or later replicate the problem and see an incorrect time being displayed, e.g.:
Here is a listing with the correct time:
And here is the same listing with an incorrect time:
eBay hasn't resolved the issue yet, however I deployed a workaround. When users add an auction, the listing information is fetched twice now. If a difference of one hour is found, an earlier time is used. It's an ugly hack, but it's the best I can do at this point. It seems to work though.
In addition, all the background processes (that update prices, end times) also have the following logic: update end_time only if an earlier endtime found than previously.
My apologies to affected users.
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