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Previous submission at https://news.ycombinator.com/item?id=22559045 https://news.ycombinator.com/item?id=22559045 I thought HN was supposed to collapse duplic
by csense 7y ago
Previous submission at https://news.ycombinator.com/item?id=22559045 https://news.ycombinator.com/item?id=22559045
I thought HN was supposed to collapse duplicate submissions to a single topic? URL appears to be identical. Is there some kind of cache issue in HN's backend?
- wolfgang42 7y agoCaching issue is unlikely, given that HN runs as a single thread on a one server, writing to a flat-file backend. As far as I'm aware the main cache involved is the OS's page cache. To your main point, the dupe detector seems to be fairly limited; I think it only checks for the same URL in the past 12 hours or 100 posts or something. It seems to be just to keep the same post from showing up multiple times in /new.
- Jaruzel 7y agoThis isn't true. I tried to submit something yesterday but got auto-redirected to a previous submission of the same url, from seven months ago.
- gus_massa 7y agoWhen the resubmission is very soon, they are collapsed. After some time, the new submission lives. The exact time is not officially available, and the mods may tweak it from time to time without warning.