The subject of the mail is "INSERT ... ON CONFLICT documentation clean-up patch". What's up with this?
That link works fine for me.
Is there any chance that you actually tried navigating to that link *before* the mail actually showed up on the list in your second page? It's normal with a short delay (usually seconds) after the email gets to majordomo before it's in the archives. At that point it should not be visible on either of those two links, but if you hit the first link it would cache the 404 response for a while. Once the email arrived, the second link would be refreshed but not the first once (since at the time you got to the first link initially, we did not know which thread to expire, as we had not seen the mail yet).
Could that be the explanation?
Hi,
I clicked on the first link a minute ago, got 404. Clicked on the second, seen the email link, clicked, got email. Went to the browser tab with the first link, refreshed, and I had the email. Maybe a kind of caching problems?
Yes, it could be - there are three different cache servers (in different datacenters) that could have slightly different origin times.
We should probably have a (much) shorter cache time for 404 responses on actual messages -- but I'd first like to figure out how it got in there in the first place. The scenario outlined above would make that happen - if that's not what happened it must be something else, but I'm not sure what. It seems highly unlikely that a search engine for example would randomly hit a messageid before we actually had it, since there would be nothing linking to it...